Wholesale Windows And Doors

A: DERCHI manufactures a full range of aluminum alloy doors and windows, including casement, sliding, fixed and tilt-and-turn windows, sliding doors, swing doors, bifold doors, front entry doors, garage doors, sunrooms, and other UPVC window options for wholesale windows and doors projects.

A: Yes. As a window and door factory, we offer project-based customization for sizes, opening types, thermal-break profiles, glass configurations, colors, and hardware. Our engineering team can match your drawings and provide one-stop aluminum windows and doors solutions for residential and commercial jobs.

A: DERCHI products are tested to international standards and can be configured to meet NFRC, CE, AS2047, CSA, ENERGY STAR and ISO9001 requirements. This helps contractors and developers meet code and bidding requirements in North America, Europe, Australia and other key markets.

A: Aluminum windows follow a clear 7-step process from surface treatment and profile cutting to assembly, sealing and packing. Behind this are 100+ pieces of equipment, standardized production lines, and multi-step inspection, including in-house testing for air, water and wind performance to keep each batch consistent.

A: Our Foshan factory covers about 70,000 m² with around 600 employees and more than 100 sets of equipment. This layout supports annual output of hundreds of thousands of square meters of aluminum windows and doors, allowing stable supply for long-term wholesale and project orders.

A: Yes. DERCHI offers 1-to-1 project service, including product selection advice, optimization of window and door schemes, shop drawings, and installation guidance. For large projects, our technical team can support on-site measurement and remote or on-site installation support as needed.

A: We provide structured after-sales service with long-term warranty on frames, glass, hardware and sealing parts. Within the warranty period, DERCHI offers technical support, replacement of confirmed quality issues, and guidance on maintenance to keep windows and doors performing well over time.

A: DERCHI wholesale windows and doors are supplied to clients on six continents, in more than 30 countries. Key markets include the United States, Canada, Australia, Europe, Southeast Asia and the Middle East, with completed projects such as villas, apartments, hotels and commercial buildings.