Views: 209 Author: Miluo Smart Home Publish Time: 2026-06-29 Origin: Site
Content Menu
● How We Evaluate High‑Quality Resin Stone Bathtub Suppliers
● China's Advantage in Resin Stone Bathtub Manufacturing
● Selection Criteria for the Top 10 List
● Top 10 Resin Stone Bathtub Manufacturers in China (2026)
>> 1. Jiaxing Miluo Smart Home Co., Ltd. (Miluo Bath), Zhejiang
>> 2. KingKonree (KKR), Guangdong
>> 3. Guangdong‑Based Solid Surface Cluster Manufacturers
>> 4. Zhejiang Cluster Manufacturers (Including Jiaxing Area)
>> 5. Foshan‑Based Solid Surface & Stone Resin Manufacturers
>> 6. Solid Surface Specialists Serving EU Markets
>> 7. North America‑Focused OEM Bathtub Manufacturers
>> 8. Integrated Bathroom Solution Manufacturers (Bathtub + Basin + Vanity)
>> 9. Mid‑Sized Customized OEM Factories for Niche Brands
>> 10. Project‑Oriented Contract Manufacturers
● Technical Considerations for Resin Stone Bathtubs
● Comparison Table: Key Supplier Dimensions
● Industry Pain Points and Hidden "Inside" Traps
● Buyer's Guide: How to Vet Resin Stone Bathtub Factories
>> 1. Verifying ISO and Other Certifications
>> 2. Sampling and Pre‑Production Validation
>> 3. On‑Site or Third‑Party Audits
>> 4. Logistics and Packaging Considerations
● Call to Action for Procurement Managers
● Frequently Asked High‑Difficulty Questions (FAQ)
China has become one of the most important sourcing hubs for resin stone bathtubs thanks to its mature sanitary ware clusters, strong export capacity, and continuous investments in solid surface technologies. For global bathroom brands, importers, and project contractors, choosing the right Chinese manufacturer can mean the difference between a stable long‑term partnership and costly quality incidents. [asjsanitaryware]
Before listing specific manufacturers, it is important to explain the evaluation framework used to identify trustworthy resin stone bathtub factories in China. The goal is to mirror how experienced purchasing managers conduct supplier due diligence in real projects. [chinamakershub]
Key evaluation dimensions:
- Factory certifications and compliance
- ISO 9001 for quality management systems. [chinamakershub]
- ISO 14001 for environmental management where available. [chinamakershub]
- Product‑specific compliance for target markets (e.g., CE for EU, REACH for chemical safety in materials that contact skin). [chinamakershub]
- R&D capability and process engineering
- In‑house mold design and prototype capability for new bathtub shapes.
- Ability to develop custom solid surface blends (e.g., resin/ATH ratio, filler type) to meet weight, strength, or cost targets.
- Experience in co‑developing products with international brands, not just copying catalog designs. [china-miluo]
- QC process and traceability
- Documented incoming material inspections and traceability of resin, fillers, and pigments. [chinamakershub]
- In‑process checks for shrinkage, surface flatness, and pinholes.
- 100% visual inspection and random water‑retention tests before packing.
- Production capacity and delivery reliability
- Stable lead times for standard SKUs (often 30–45 days after deposit for full containers).
- Sufficient molding lines and curing areas to handle seasonal peaks without compromising quality. [china-miluo]
- Export experience to key markets (EU, US, Asia‑Pacific), including familiarity with packaging strength tests and drop tests.
- OEM/ODM depth and communication
- Ability to handle full‑cycle ODM (design concept → 3D model → prototype → tooling → mass production). [china-miluo]
- Foreign language communication (English as standard) and structured project management.
- Flexibility on MOQ for new projects and ability to support small to mid‑size brands. [china-miluo]
This evaluation framework is applied consistently across the manufacturers listed below, based on publicly available information, export data, and industry reports. [oec]
China's bathroom and sanitary ware exports have shown strong, long‑term growth, underpinned by highly concentrated industrial clusters in provinces such as Guangdong, Zhejiang, Fujian, and Jiangsu. These clusters integrate resin suppliers, mold makers, polishing workshops, and packaging providers, creating economies of scale and shorter development cycles. [cnsanipro]
- According to data from China's customs and industry analysts, exports of sanitary ware products, including bathtubs and basins, exceeded 13 billion USD in 2021, with a high concentration in "porcelain washbasins, bathtubs and similar sanitary appliances". [asjsanitaryware]
- For plastic and composite bathroom fixtures (HS 3922), China's exports reached about 1.59 billion USD in 2023, highlighting its dominance in related bathroom products. [trendeconomy]
- Globally, China is also the largest exporter of porcelain bathroom and kitchen sanitary fixtures, with exports exceeding 3.1 billion USD in 2023. [oec]
For resin stone bathtubs specifically (solid surface / stone resin), many leading factories are located in or near these clusters, leveraging shared supply chains, skilled labor, and established export channels. [china-miluo]
This Top 10 list focuses specifically on resin stone / solid surface bathtub manufacturers that serve global OEM/ODM customers. Selection is based on the following criteria: [kingkonree]
- Product focus: Significant share of production in solid surface / stone resin bathtubs (not just acrylic or steel). [kingkonree]
- Export track record: Documented export experience to major markets (EU, North America, Asia‑Pacific). [kingkonree]
- Quality and compliance: Evidence of ISO 9001 or similar certifications, and familiarity with CE/REACH or other destination requirements. [chinamakershub]
- R&D and customization: Ability to support custom molds, finishes, sizes, and integrated product solutions (e.g., matching basins and vanities). [china-miluo]
- OEM/ODM orientation: Clear positioning as a manufacturer behind brands, rather than purely a domestic brand retailer. [kingkonree]
- Operational transparency: Availability of factory information, export markets, and capabilities through official websites and reputable B2B platforms. [made-in-china]
Note: This list combines recognized industry leaders and highly capable mid‑size factories that are particularly suitable for small and medium‑sized brands seeking flexible OEM/ODM partnerships. [kingkonree]
Jiaxing Miluo Smart Home Co., Ltd., also known as Miluo Bath, was founded in 1999 in Jiaxing, Zhejiang, and specializes in high‑end solid surface bathtubs, basins, and bathroom vanities. With over 20 years of export experience, the company focuses on customized solutions and OEM/ODM services for overseas brand owners, wholesalers, and project customers. [china-miluo]
- Founded: 1999. [china-miluo]
- Core strengths:
- Comprehensive product range covering solid surface bathtubs, wash basins, and bathroom cabinets, enabling cohesive bathroom collections. [china-miluo]
- Strong emphasis on R&D and design, including the ability to adapt shapes, dimensions, drainage layouts, and colors to specific market needs. [china-miluo]
- Strategic location in Jiaxing with convenient access to major seaports, helping stabilize lead times and logistics planning. [china-miluo]
- Main markets: Europe, North America, Asia‑Pacific (as indicated by export‑oriented positioning and English‑language communication channels). [china-miluo]
- OEM/ODM scope:
- Suitable for small and mid‑size bathroom brands seeking flexible MOQs and responsive project communication.
- Offers private‑label production, customized packaging, and support for brand‑specific design libraries. [china-miluo]
For procurement managers, Miluo Bath is particularly attractive when looking for high cost‑performance, flexible scheduling, and deeper engineering support than typical catalog‑only suppliers: the company's experience in high‑end solid surface products allows it to advise on material formulations, thickness optimization, and installation requirements for different markets. [china-miluo]
KingKonree (often branded as KKR) is a well‑known solid surface manufacturer headquartered in Guangdong, producing stone resin bathtubs, basins, and related bathroom fixtures. The company emphasizes gel‑coated stone resin surfaces for enhanced durability and stain resistance, and offers a broad catalog of freestanding and built‑in tub designs. [kingkonree]
- Founded: Early 2000s (solid surface focus).
- Core strengths:
- Extensive standard mold library for stone resin bathtubs and matching basins.
- Experience supplying to mid‑ to high‑end bathroom brands with consistent export performance. [kingkonree]
- Main markets: Europe, North America, Asia‑Pacific. [kingkonree]
- OEM/ODM scope:
- OEM for existing molds and logo/packaging customization.
- ODM for new shapes, sizes, and color‑through designs with minimum order quantities aligned to mold investment. [kingkonree]
Several unnamed but high‑capacity manufacturers in the Guangdong solid surface cluster supply stone resin bathtubs on an OEM basis via platforms such as Made‑in‑China and Alibaba. These factories often operate as the production base behind both international and domestic bathroom brands. [made-in-china]
- Founded: Many between late 1990s and early 2010s.
- Core strengths:
- Large output capacity with multiple casting and polishing lines.
- Ability to integrate matched basins, countertops, and vanities for full bathroom packages. [made-in-china]
- Main markets: EU, Middle East, Oceania. [made-in-china]
- OEM/ODM scope:
- Catalog‑based OEM for distributors and retailers.
- ODM projects for hotel chains and residential developers, often with pre‑certified products for specific markets. [made-in-china]
Procurement managers often treat these manufacturers as backup capacity or cost‑optimized options once a primary design is validated. [made-in-china]
Zhejiang province, especially regions such as Jiaxing and nearby cities, has emerged as another important base for high‑end sanitary ware, including resin stone bathtubs. Here, many factories leverage proximity to ports like Shanghai and Ningbo to serve global markets efficiently. [cnsanipro]
- Founded: Typically early 2000s, evolving from acrylic or composite sanitary ware. [cnsanipro]
- Core strengths:
- Strong export orientation with experience in packaging optimization and cost control.
- Good integration with hardware and faucet suppliers from Zhejiang's broader plumbing industry. [cnsanipro]
- Main markets: US, EU, Southeast Asia. [trendeconomy]
- OEM/ODM scope:
- Balanced focus on both private label OEM and co‑developed ODM collections for mid‑size brands.
Within this cluster, Jiaxing Miluo Smart Home Co., Ltd. is a representative example of a mid‑size, R&D‑driven manufacturer (detailed separately below). [china-miluo]
Foshan, in Guangdong, is one of China's best‑known sanitary ware hubs, hosting numerous factories that produce acrylic, ceramic, and stone resin bathtubs. Many of these factories evolved from ceramic sanitary ware into composite and stone resin solutions to serve mid‑ and high‑end markets. [asjsanitaryware]
- Founded: Many legacy ceramics manufacturers established in the 1990s or earlier, diversifying into composite products after 2010. [asjsanitaryware]
- Core strengths:
- Cluster advantages with access to ceramics, faucets, and hardware suppliers, suitable for full bathroom solutions.
- Established export channels and joint‑venture relationships with foreign brands. [asjsanitaryware]
- Main markets: Europe, Middle East, Latin America. [asjsanitaryware]
- OEM/ODM scope:
- Strong in project‑based supply for hotels and real estate developments.
- Ability to co‑develop bathtubs with matching tiles and ceramic fixtures for unified design schemes.
For buyers, Foshan manufacturers are often the default choice when they already work with Chinese suppliers for tiles or ceramics and want to consolidate sourcing. [asjsanitaryware]
Some Chinese solid surface bathtub manufacturers position themselves primarily toward EU markets, emphasizing compliance with CE, REACH, and stringent VOC/emission requirements. These factories often partner with European importers and distributors and may offer pre‑tested SKUs for quicker market entry. [chinamakershub]
- Founded: 2000s–2010s.
- Core strengths:
- Familiarity with EU documentation: DoPs (Declarations of Performance), technical files, and test reports.
- Strong QC documentation and batch traceability aligned with EU retailer audits. [chinamakershub]
- Main markets: EU (Germany, France, UK), occasionally Scandinavia.
- OEM/ODM scope:
- Focus on mid‑ to high‑end collections with well‑defined QA systems and regular third‑party audits.
These suppliers are ideal for importers who must pass frequent compliance audits from large DIY chains or bathroom retail groups. [chinamakershub]
A subset of Chinese resin stone bathtub factories specialize in serving North American brands and wholesale channels, with particular attention to packaging robustness and compliance with local plumbing standards. These manufacturers may offer cUPC or other relevant approvals depending on the specific model design and intended market. [made-in-china]
- Founded: 2000s.
- Core strengths:
- Experience with palletization standards, drop tests, and warehouse handling in the US and Canada.
- Ability to adjust drain positions and dimensions to suit North American installation practices. [made-in-china]
- Main markets: United States, Canada.
- OEM/ODM scope:
- Private‑label supply for importers, online brands, and big‑box retailers.
- Color customization (e.g., matte white, off‑white, stone‑look textures) for differentiated product lines.
These factories are effective partners when buyers need to balance cost, compliance, and e‑commerce‑friendly packaging. [made-in-china]
Another important category of suppliers are integrated bathroom solution manufacturers that offer matching stone resin bathtubs, basins, and vanities under one roof. These factories position themselves as one‑stop solution providers for developers and brands who want consistent design language across all fixtures. [made-in-china]
- Founded: Often 1990s–2000s, evolving from individual product segments into integrated solutions.
- Core strengths:
- Design synergies across bathtubs, basins, and vanities with consistent material and color. [china-miluo]
- Simplified logistics and reduced coordination effort for buyers.
- Main markets: Project‑based exports (hotels, premium residential projects) in Europe, Middle East, and Asia. [made-in-china]
- OEM/ODM scope:
- Capable of delivering full bathroom packages tailored to specific project specifications.
Jiaxing Miluo Smart Home Co., Ltd. falls into this integrated solution category, combining solid surface bathtubs, basins, and bathroom cabinets in coordinated collections. [china-miluo]
Beyond the large, well‑known names, there is a tier of mid‑sized factories specializing in customized OEM services for niche or regional brands, often with more flexible MOQs and faster iteration cycles. These companies may not have strong consumer‑facing brands but are highly visible on export platforms and through industry referrals. [made-in-china]
- Founded: 2010s.
- Core strengths:
- High flexibility in adapting designs, adjusting molds, and accepting small pilot orders.
- Willingness to co‑create marketing assets (e.g., product photos, installation diagrams) for brand partners.
- Main markets: Regional distributors in Europe, Oceania, and emerging markets. [made-in-china]
- OEM/ODM scope:
- Ideal for start‑ups and online bathroom brands needing "design‑to‑order" support rather than just catalog products.
These factories are often an excellent complement to larger suppliers when buyers want to test new concepts or region‑specific designs. [made-in-china]
Finally, some resin stone bathtub suppliers in China specialize in project‑oriented manufacturing, working directly with contractors and engineering companies for hotels, serviced apartments, and high‑end residential developments. Their focus is on engineering‑driven customization and on‑time delivery across multiple project phases. [kingkonree]
- Founded: Typically experienced companies with prior backgrounds in construction or ceramics.
- Core strengths:
- Ability to manage project documentation, shop drawings, and coordination with architects and MEP engineers.
- Flexible scheduling to match site progress and phased shipments.
- Main markets: Global hospitality and commercial projects. [kingkonree]
- OEM/ODM scope:
- Custom shapes, overflows, and integrated features (e.g., recessed shelves, matching shower trays).
These manufacturers are ideal partners when your focus is project execution rather than retail distribution. [kingkonree]
Understanding the technical aspects of resin stone bathtubs helps procurement managers evaluate suppliers more effectively. [kingkonree]
Key technical points:
- Material composition
- Typically a combination of unsaturated polyester or acrylic resin with alumina trihydrate (ATH) or similar mineral fillers. [kingkonree]
- Higher ATH content generally improves fire resistance and gives a more "stone‑like" feel but may increase weight and cost.
- Surface finishing
- Gel coat finishes are common to provide a smooth, stain‑resistant surface; matte finishes are popular in high‑end markets. [kingkonree]
- High‑quality polishing and sanding processes are critical to avoid visible swirl marks and maintain consistent gloss or matte levels. [china-miluo]
- Mechanical performance
- Wall thickness and reinforcement influence impact resistance and long‑term stability.
- Proper curing and post‑curing help avoid deformation, yellowing, or cracking in extreme temperature environments. [china-miluo]
- Compliance and safety
- For EU markets, buyers often require evidence of compliance with REACH for chemical substances and sometimes with additional national regulations for bathroom fixtures. [chinamakershub]
- For hotels and large projects, some buyers may request anti‑slip testing or additional load‑bearing tests.
Having detailed technical specifications and test reports available is a strong sign of a mature supplier. [chinamakershub]
Below is a simplified comparison framework illustrating how procurement managers can benchmark different resin stone bathtub suppliers in China. Values are indicative rather than tied to specific company names.
| Supplier Type | Typical Monthly Capacity (40HQ) | Typical MOQ per Model | Common Certifications |
|---|---|---|---|
| Zhejiang cluster manufacturers (incl. Miluo) | 20–50 containers | 5–20 pcs | ISO 9001 or equivalent |
| Large Guangdong solid surface brands | 40–80 containers | 10–20 pcs | ISO 9001, some ISO 14001 |
| EU‑focused compliance specialists | 15–30 containers | 20–30 pcs | ISO 9001, REACH, CE docs |
| North America‑focused OEM factories | 20–40 containers | 10–20 pcs | ISO 9001, cUPC (select) |
| Mid‑sized customized OEM factories | 5–15 containers | 3–10 pcs | ISO 9001 (selected) |
| Project‑oriented contract manufacturers | 10–20 containers | Project‑based | ISO 9001, project audits |
These ranges can help buyers evaluate whether a given factory's scale and certification profile aligns with their volume and compliance requirements. [made-in-china]
Sourcing resin stone bathtubs from China offers significant cost and design advantages, but there are recurring pain points that experienced buyers watch for carefully. [sourcingwill]
Common issues:
- Material downgrading
- Some suppliers may lower ATH content or change resin grades without clear notification, leading to heavier odor, yellowing, or surface micro‑cracks over time. [chinamakershub]
- Inconsistent wall thickness
- To save material, less reputable factories may unevenly thin walls or bases, increasing risk of cracking, especially in corner areas. [chinamakershub]
- Weak documentation and fake certificates
- Copies of ISO or CE certificates are sometimes altered; some factories show certificates that do not match the actual scope of production. [sourcingwill]
- Packaging shortcuts
- Reducing foam, protective film, or pallet quality results in higher damage rates during ocean transport, especially for long tubs. [made-in-china]
An "internal" trap that many experienced buyers know, but which is rarely written explicitly online, is that some factories run different production "levels" depending on the client: top‑tier export brands receive full‑spec materials and strict QC, while smaller or first‑time buyers may be given downgraded formulations if they focus only on price. To avoid this, procurement managers insist on: [sourcingwill]
- Clear, written technical specifications (material composition, weight tolerance, wall thickness).
- Regular third‑party inspections or at least random batch testing.
- Long‑term framework agreements that tie price to stable formulations rather than open "cost down" discussions.
Verification steps (based on best‑practice guides for Chinese manufacturers): [chinacheckup]
1. Check issuing body and accreditation
- Ensure ISO 9001 or ISO 14001 certificates are issued by a recognized, accredited body (look for CNAS, UKAS, or other accreditation marks). [chinamakershub]
2. Confirm validity and scope
- Use the certifier's public database or contact them directly with the certificate number to confirm status and scope. [chinacheckup]
3. Match company legal name and address
- Ensure the certificate matches the factory's registered name and address; any mismatch warrants deeper investigation. [chinamakershub]
4. Be cautious of scanned copies only
- Always request high‑resolution copies and, for critical projects, cross‑check directly via CNCA or the certifier's own website. [chinacheckup]
- Request representative samples
- At least one full‑size bathtub from the intended production mold, not just material samples.
- Check critical attributes
- Surface flatness, gloss or matte consistency, feel of edges, and weight vs. spec.
- Perform basic tests
- Fill with water to check for deflection, leaks around drain, and any unusual odors when exposed to hot water.
For integrated solutions (bathtub + basin + vanity), buyers should evaluate color consistency under different lighting, as minor pigment differences can become very visible in real bathrooms. [china-miluo]
- Factory visit or professional audit
- Review molding, curing, sanding, and packing processes directly. [chinamakershub]
- Check in‑house lab equipment
- Verify if the factory has basic testing capability for density, load testing, and surface inspection.
Many buyers engage third‑party quality control companies for initial audits and ongoing pre‑shipment inspections. [chinamakershub]
- Packaging design
- Confirm use of robust cartons, foam inserts, wooden frames, and moisture‑resistant wrapping for ocean transport. [made-in-china]
- Container loading plan
- Ensure the factory provides optimized loading plans, especially for mixed orders of bathtubs, basins, and vanities.
- Insurance and claim procedures
- Clarify how damage claims will be handled and what documentation is required.
For long‑distance shipments or complex projects, factories located near major ports (e.g., Jiaxing Miluo near Shanghai/Ningbo, Guangdong and Foshan factories near Shenzhen/Guangzhou ports) can help reduce inland logistics cost and risk. [trendeconomy]
If you are planning to develop or expand a resin stone bathtub product line, now is an ideal time to benchmark multiple Chinese suppliers, particularly those with integrated bathtub‑basin‑vanity capabilities and proven OEM/ODM experience. Shortlisting 2–3 manufacturers from different clusters (e.g., Guangdong and Zhejiang) and running parallel sampling and pilot orders can significantly reduce sourcing risk. [asjsanitaryware]
For buyers seeking a high‑value, flexible partner capable of supporting both standard and customized collections, manufacturers like Jiaxing Miluo Smart Home Co., Ltd. in Zhejiang offer a balanced combination of technical strength, design support, and customer‑centric OEM/ODM services. Engaging early with such suppliers to co‑plan your 12–24‑month product roadmap will help secure capacity and align engineering resources to your market requirements. [china-miluo]
Q1: How can I verify whether a Chinese manufacturer's ISO 9001 certificate is genuine and not expired?
A1: Cross‑check the certificate number on the issuing body's official database or contact them directly, confirm the certificate's validity dates, and ensure the scope covers resin stone bathtub production. Also verify that the factory's legal name and address match the certificate exactly. [chinacheckup]
Q2: How can I be sure the factory will not downgrade resin or filler materials after initial orders?
A2: Include material composition, weight tolerance, and wall thickness requirements in your purchase contract, request batch test reports, and periodically send samples for third‑party testing or conduct surprise inspections. [sourcingwill]
Q3: What certifications are typically needed if I import resin stone bathtubs into the EU?
A3: While bathtubs themselves may not always require CE marking, buyers should ensure compliance with REACH for chemical substances, and verify that any associated components (e.g., integrated drains) meet relevant EU directives. Large retailers may also ask for ISO 9001 and social audits (e.g., BSCI). [chinamakershub]
Q4: How do I evaluate a factory's ability to handle ODM projects rather than just OEM?
A4: Check whether the factory has in‑house designers and engineers, past experience co‑developing products with overseas brands, and clear processes for CAD, prototyping, mold development, and design changes. A good ODM supplier can share case examples (with client names removed) and detailed project timelines. [china-miluo]
Q5: What is a realistic lead time for custom resin stone bathtubs, including new mold development?
A5: For new molds, expect 30–45 days for design, tooling, and validation, followed by 30–45 days for the first mass production batch once the sample is approved, depending on factory capacity and order volume. Lead times can be longer during peak export seasons, so early planning is essential. [asjsanitaryware]
1. KingKonree. Top 10 Stone Resin Bathtub Manufacturers and Brands.
https://www.kingkonree.com/blog/top-stone-resin-bathtub-manufacturers-brands.html [kingkonree]
2. Miluo Bath (Jiaxing Miluo Smart Home Co., Ltd.). Company Profile and Product Overview.
https://www.china-miluo.com/ [china-miluo]
3. General Administration of Customs of the People's Republic of China – Sanitary Ware Import and Export Data (2019–2021).
https://www.asjsanitaryware.com/news/the-total-import-and-export-volume-of-sanitary-ware-in-china-from-2019-to-2021-shows-an-overall-upward-trend [asjsanitaryware]
4. Sanipro – Analysis of China's Sanitary Ware Exports in 2022.
https://www.cnsanipro.com/article_1544.html [cnsanipro]
5. OEC – Porcelain Bathroom, Kitchen and Other Sanitary Fixtures (HS 691010): Product Trade, Exporters and Importers.
https://oec.world/en/profile/hs/porcelain-bathroom-kitchen-other-sanitary-fixtures [oec]
6. TrendEconomy – China Imports and Exports of Baths, Shower Baths, Sinks, Wash Basins and Similar Articles (HS 3922).
https://trendeconomy.com/data/h2/China/3922 [trendeconomy]
7. IndexBox – China's Plastic Bathroom Fixtures Market Overview 2024.
https://www.indexbox.io/blog/plastic-bath-or-sink-china-market-overview-2024/ [indexbox]
8. Made‑in‑China – Stone Resin Bath Product Listings and Supplier Profiles.
https://www.made-in-china.com/products-search/hot-china-products/Stone_Resin_Bath.html [made-in-china]
9. ChinaMakersHub – ISO Certifications for China Manufacturers Explained.
https://chinamakershub.com/journal/iso-certifications-china-manufacturers-explained [chinamakershub]
10. SourcingWill – How to Verify Factory Certifications in China (ISO, CE, etc.).
https://www.sourcingwill.com/how-to-verify-factory-certifications-in-china-iso-ce-etc/ [sourcingwill]
11. China Checkup – Is There a China ISO Certificate Search Website?
https://www.chinacheckup.com/blogs/articles/china-iso-certificate-search-website [chinacheckup]
