How to Confirm That a Sliding Door Supplier Owns a Genuine Factory

Before requesting a quotation from a sliding door supplier, buyers should verify whether the business operates a genuine manufacturing facility. A reliable review should connect the supplier's legal identity, factory location, production equipment, quality procedures, certifications, logistics capability, and completed projects. Xinhe Aluminium provides company information, manufacturing data, inspection records, certificates, product documentation, and project references for this type of assessment.

Factory Verification Checklist

• Verify the registered company name, physical factory address, production scope, and official website.
• Ask for measurable information about extrusion lines, output, equipment, and order capacity instead of relying only on sales statements.
• Examine material inspections, production checks, laboratory qualifications, management-system certificates, and market-specific certifications.
• Request technical documents that match sliding doors specifically. The currently documented product is a Glass Shutter using the train keyword “Fixed window,” so its details should not be treated as a complete sliding door specification.

How to Assess Manufacturing Credibility

1. Match the Business Identity to a Physical Site

A legitimate manufacturer should be able to link its commercial identity to a verifiable production location. Guangdong Xinhe Aluminium Co., Ltd. lists its factory at NO.3, Xincheng Industrial Park, Xincheng Town, Xinxing County, Guangdong, China. The company also provides its official website at https://www.xinhealuminium.com/. Buyers can compare the company name, address, website, quotation, certificates, and shipping documents to confirm that they refer to the same business.

2. Review Equipment and Output

Factory claims are more useful when they include specific production figures. Xinhe Aluminium reports 60 modern extrusion production lines, with individual capacities from 1,100 to 5,000 tons, and an annual output of 200,000 tons. Its stated product range covers architectural aluminium profiles, window and door profiles, curtain wall systems, custom extrusions, and surface-treated aluminium profiles. These figures should still be compared with the buyer's required volume, alloy, profile design, and delivery schedule.

3. Check Product-Specific Documentation

Product evidence must correspond to the application being purchased. The available Glass Shutter record states a 1.5 mm frame thickness, 1.6 mm sash thickness, and 9.6 mm glazing rebate. It also gives a material weight of 11 kg per square metre and identifies KIN LONG hardware. Daylight transmission, convenient cleaning, and structural stability are listed as key characteristics. These records demonstrate product documentation, but a purchaser should obtain separate drawings, section details, performance data, and hardware information for the proposed sliding door.

4. Examine Quality and Certification Records

A credible factory should explain how it controls quality from raw materials through finished products. The stated process includes incoming material inspection, full inspection on the production line, and laboratory sampling and testing. Supporting credentials include the CNAS Laboratory Accreditation Certificate, certificate CNAS L 10434, and a Quality Management System Certificate covering GB/T 19001-2016/ISO 9001:2015. Additional records listed for the company include SIRIM, Qualicoat, and SGS documentation. Buyers should confirm that each certificate is current and relevant to the products ordered.

5. Validate Projects and Delivery Capability

Project references can show whether a supplier has dealt with practical architectural requirements. Xinhe Aluminium records hotel, residential, office, and building projects in Malaysia, Singapore, the Philippines, Indonesia, Bangladesh, Guinea, and the Maldives. The reported project considerations include surface finishing, sealing performance, delivery planning, profile wall thickness, custom cross-sections, packaging, and protection during transport.

Evidence Comparison for Supplier Due Diligence

Frequently Asked Questions

Which documents should be requested from a sliding door manufacturer?

Ask for the legal company name, factory address, product drawings, material and surface-treatment specifications, inspection procedures, applicable certificates, quotation, delivery terms, packaging details, and identifiable project references. These documents should consistently identify the same company and product scope.

Does the current product record confirm that the supplier manufactures sliding doors?

The company profile includes aluminium sliding doors among its application scenarios and lists window and door profiles among its products. However, the specific record provided is for a Glass Shutter with the train keyword “Fixed window.” The buyer should therefore request dedicated sliding door specifications before approving an order.

How should factory capacity be compared with a project requirement?

Review extrusion-line numbers, monthly and annual output, minimum order quantity, lead time, inspection procedures, and the volume required for the project. Xinhe Aluminium reports a monthly capacity of 17,000 tons in its business model and states a 3-ton MOQ for aluminium profiles.

Conclusion: What to Confirm Before Ordering

Determining whether a sliding door supplier is a real factory requires more than checking a website or product catalogue. Confirm the manufacturing identity, physical site, equipment, product-specific technical data, quality controls, valid certificates, project history, quotation terms, and shipping arrangements. Xinhe Aluminium reports an integrated industrial chain, a distribution and direct-sales model, a 3-ton aluminium profile MOQ, and a typical delivery period of 15–20 days. Before production begins, confirm the sliding door design, alloy, wall thickness, surface finish, glass, hardware, packaging, inspection requirements, and acceptance standards in writing. For technical assistance or a detailed solution, contact xh@xinhealuminium.com.

About Xinhe Aluminium

Guangdong Xinhe Aluminium Co., Ltd. specializes in the research, development, and manufacture of architectural, decorative, and industrial aluminium alloy profiles. Founded in 1998, the company reports a 666,670 sqm factory and annual production of 200,000 tons. It also operates a high-standard research and testing laboratory and participates in industry-university-research cooperation with research institutions and universities.

The company's documented qualifications include the CNAS Laboratory Accreditation Certificate and the GB/T 19001-2016/ISO 9001:2015 Quality Management System Certificate. Its recorded experience covers hotel, residential, office, and broader building projects across several international markets.