




| Profile thickness | Frame thickness: 1.8mm | Fan thickness: 1.8mm |
| Specification | Fan width: 650mm - 900mm | Fan height: 1500mm - 3000mm |
| Glass | 5mm+27A+5mm double tempered ( single glass notch is 13mm ) |
| Grills | Bifold door series are normally square grills or diamond grills ( 27 A hollow ) |
| Blinds | Magnetic control blinds and electric blinds |
Our folding door pulleys are made of high quality materials and precision machining and can hold up to 300kg.
The precision-designed handle offers a comfortable feel, smooth operation, and anti-theft features, ensuring both security and convenience.
The high-quality hinge design ensures smooth door operation, strong load-bearing capacity, and is resistant to corrosion and durable, extending the service life.
Opens up to 180°, providing 6m of passage. When folded, it saves up to 80% of floor space.
Reduces noise by up to 40dB, waterproof ≥500Pa, wind resistance ≥2500Pa, U-value 0.13W/ft²·K, and 25%-30% energy savings.
90° corner customization, up to 8 panels, with various colors and finishes.
High-quality, durable, and reliable window and door manufacturers & suppliers & wholesale in China! WANJIA team has more than 500 members. We possess extensive experience in both international trade and production. Whether you require assistance in selecting standard sizes or customizing windows and doors, we are capable of providing professional solutions for your residential or commercial projects.
1.Cutting / 2.Open Corner Brace Hole / 3.Install Corner Brace / 4.Cleaning Glass / 5.Glass Assembly / 6.Gluing / 7.Test / 8.Packing
WANJIA's window and door products are widely sold to international markets including North America, Europe, Australia, New Zealand, Southeast Asia, and more.



Our bifold doors feature an aluminum frame thickness of 1.8mm and fan thickness of 1.8mm. The fan width ranges from 650mm to 900mm, with height options between 1500mm and 3000mm.
We standardly configure the systems with 5mm+27A+5mm double tempered insulated glass (with a single glass notch of 13mm) to provide optimal sound insulation and thermal performance.
The doors can open up to 180 degrees, allowing up to a 6-meter passage. When fully folded, they save up to 80% of floor space compared to conventional sliding or swing doors.
Yes, we provide 90° corner customization, configurations of up to 8 panels, built-in magnetic or electric blinds, decorative grills, and custom color and finish options.
Our doors offer sound reduction up to 40dB, water tightness of ≥500Pa, wind resistance of ≥2500Pa, a U-value of 0.13W/ft²·K, contributing to a 25%-30% energy efficiency boost.
The full manufacturing flow comprises 8 core steps: Cutting, Corner Brace Hole Opening, Corner Brace Installation, Glass Cleaning, Glass Assembly, Gluing, Quality Testing, and Protective Packing.