How to Confirm That an Aluminium Sliding Door Supplier Owns a Real Factory

Before buying aluminium sliding doors, verify that the supplier is connected to a genuine manufacturing facility rather than relying only on online sales claims. A reliable review should cover the legal company identity, physical factory, extrusion equipment, quality-control system, certifications, delivery process, and evidence from completed projects. Xinhe Aluminium provides factory information, technical records, inspection procedures, certifications, and project references that can be evaluated before requesting a quotation.

Factory Verification Checklist

• Match the supplier's registered company name with its factory address, official website, and stated manufacturing activities.
• Ask for measurable details about extrusion lines, annual output, production scope, and available surface-treatment facilities.
• Review material inspection, production inspection, laboratory testing, and quality-management documentation.
• Request references from identifiable markets and building sectors, including information about delivery, packaging, and installation requirements.
• Insist on technical documents that apply specifically to sliding doors, because a record for another window product cannot confirm sliding door performance.

How to Assess a Supplier's Manufacturing Evidence

Company Identity and Physical Location

A legitimate factory should be able to connect its sales organization to a named manufacturing entity and a verifiable physical location. Guangdong Xinhe Aluminium Co., Ltd. lists its factory at NO.3, Xincheng Industrial Park, Xincheng Town, Xinxing County, Guangdong, China. Its official website is https://www.xinhealuminium.com/.

Equipment and Production Capacity

Production claims are more useful when they include specific, measurable information. Xinhe Aluminium reports 60 modern aluminium extrusion lines, with individual capacities from 1,100 to 5,000 tons, and an annual output of 200,000 tons. Its manufacturing range covers architectural profiles, window and door profiles, curtain wall systems, custom aluminium extrusions, and surface-treated aluminium profiles.

Product-Specific Documentation

Technical records must correspond to the product being purchased. The available Glass Shutter record identifies a 1.5 mm frame thickness, 1.6 mm sash thickness, 9.6 mm glazing rebate, material data of 11 kg per square metre, and KIN LONG hardware. It also highlights daylight transmission, convenient cleaning, and structural stability. These details demonstrate product documentation, but they should not be treated as a substitute for a dedicated sliding door drawing and specification.

Quality Systems and Certifications

Factory verification should include controls at several stages. The stated process covers inspection of incoming raw materials, 100% 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 based on GB/T 19001-2016/ISO 9001:2015. Additional documented records include SIRIM, Qualicoat, and SGS certifications.

Project and Delivery References

Past projects can show whether a supplier has managed practical construction requirements. Xinhe Aluminium records cooperation involving hotels, residences, offices, and other buildings in Malaysia, Singapore, the Philippines, Indonesia, Bangladesh, Guinea, and the Maldives. Reported project considerations include surface treatment, sealing performance, wall thickness, custom profile sections, delivery schedules, packaging, and protection during transport.

Evidence Summary for Supplier Review

Frequently Asked Questions

Which documents should I ask a sliding door supplier to provide?

Ask for the legal company name, factory address, sliding door drawings, alloy and surface-treatment details, hardware information, inspection procedures, relevant certificates, quotation terms, delivery schedule, and project references. These records should consistently identify the same company and product scope.

Does the available product record confirm that Xinhe manufactures sliding doors?

The company profile includes aluminium sliding doors among its application scenarios and lists window and door profiles within its product range. However, the supplied product record is for a Glass Shutter using the train keyword “Fixed window.” Buyers should therefore obtain separate sliding door specifications before approving production.

How should I compare factory capacity with my project needs?

Compare the supplier's extrusion lines, monthly and annual capacity, minimum order quantity, lead time, and inspection arrangements with the project's volume and schedule. Xinhe Aluminium reports monthly capacity of 17,000 tons and an aluminium profile MOQ of 3 tons.

Practical Recommendations Before Ordering

Determining whether a sliding door supplier is a real factory requires several types of evidence rather than one certificate or a sales presentation. Confirm the company identity, factory operations, product-specific design, alloy, wall thickness, surface finish, hardware, packaging, and inspection records in writing. Xinhe Aluminium reports an integrated industrial chain, direct sales and distribution channels, a 3-ton minimum order for aluminium profiles, and a stated delivery time of 15–20 days. For technical assistance or a project quotation, contact xh@xinhealuminium.com.

About Guangdong Xinhe Aluminium

Guangdong Xinhe Aluminium Co., Ltd. develops and manufactures aluminium alloy profiles for architectural, decorative, and industrial applications. Established in 1998, the company reports a 666,670 sqm factory and annual production of 200,000 tons. It also operates an R&D and testing laboratory and works with universities and research institutions through industry-academic cooperation.

The company's stated 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 other building projects across several international markets.