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LANGE French Bifold Patio Door Certified Ultra-narrow Bezel Aluminum Alloy Thermal Break Insulation Energy Saving Bifold Door
Product Description
LANGE Folding Door — Open the Whole Wall, Stack It Away Up to 90% Opening
Thermal Break · Triple Glass Option · Custom Sizes & Colors
A folding door does what a fixed window or a standard door cannot: it removes the wall. LANGE folding doors fold panel by panel and stack to one or both sides, opening up to 90% of your opening — turning a living room into a terrace, a kitchen into a garden room, a balcony into open air.
Built on thermal-break aluminum profiles with tempered glass and precision folding hardware, each door is made to your dimensions, color and opening direction.
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Products Description
✓ Reinforced thickened aluminum profile + multi-point locking system, stable & wind resistant
✓ Standardized production line, 100% batch inspection, uniform product quality
✓ Full customization support: size, color, glass, hardware, opening mode
✓ 100% factory direct sales, flexible MOQ, big discount for bulk order
✓ Professional overseas technical team, 5-year official warranty, 24h online service
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Why Choose Us
LANGE boasts a modern 20,000m² manufacturing facility and is a global leader in high-performance window and door systems. We are equipped with world-class precision technology, including the German Elumatec SBZ 628 CNC Processing Center and the Sigma Fully Automatic Corner Crimping Line, ensuring every joint reaches micron-level accuracy.
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Our Advantages
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Product Showcase
Commercial & Residential Folding Patio Door, Space-Saving, Soundproof, Waterproof, Thermal Insulation, Perfect for Villa, Balcony, Hotel, Office & Project Engineering.
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Customer Feedback
| Issues of Concern | Lange Solutions |
|---|---|
| Sagging After Long-term Use: Excessive leaf weight causes track deformation over time. | Reinforced Guide Rails: 3.0mm thick aviation-grade aluminum tracks paired with precision steel bearings guarantee zero sagging for 10 years. |
| Air & Water Leakage: Numerous folding joints often lead to poor sealing and moisture penetration. | Multi-layer EPDM Sealing: Double sealing strips at every joint ensure premium airtightness and Class 4+ watertightness. |
| Logistics Damage: Large-scale glass folding doors are highly fragile during international shipping. | Steel-Reinforced Crates: Custom-engineered steel-wood composite packaging, maintaining a damage rate of less than 0.1%. |
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Product Parameters
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Company Profile
Zhengzhou Lange Intelligent Technology Co., Ltd. is a leading integrated enterprise specializing in high-performance system windows and Intelligent Space/Sleep Pods. With 22 years of engineering excellence and 80+ sets of CNC equipment, we maintain a 500,000 SQM annual capacity. As a strategic partner of YKK, LIXIL, and LG, we cross-apply premium insulation technology to our "Plug-and-Play" space pods for glamping and commercial use. Guided by craftsmanship, we turn customer expectations into reality with integrity and precision.
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Frequently Asked Questions
Q1 Are you a direct manufacturer or factory?
Yes, we have our own manufacturing facility with over 22 years of experience located in Zhengzhou, Henan Province.
Q2 How does the purchasing and ordering process work for first-time buyers from China?
With over 20 years of export experience worldwide, our team provides full operational support through a straightforward process: Consultation & Design Confirmation → Order Placement → Production → Shipment → Doorstep Delivery.
Q3 What payment terms and payment methods are accepted?
We support 100% in advance or a 30% deposit with the 70% balance settled before shipment, as well as 100% irrevocable L/C at sight. Payment methods include T/T (Wire Transfer), online transfer, Credit Card, VISA, PayPal, and Apple Pay.
Q4 How long is the delivery and production cycle?
Lead times depend on dimensions, glass specifications, color, hardware, and order volume. Once drawings and specifications are finalized, a formal schedule is provided to allow sufficient time for fabrication, rigorous quality inspection, and shipping.
Q5 Can this aluminum folding door be customized to specific project sizes?
Yes. Doorway dimensions, number of panels, opening direction, glass configuration, profile color, handle/lock type, and track styles can all be customized according to architectural requirements. Simply provide the width, height, and site photos for a tailored quote.
Q6 What kind of packaging and quality assurance is offered for international logistics?
We utilize custom-engineered steel-wood composite crates to achieve a transit damage rate below 0.1%, complemented by a 5-year official warranty and 24-hour online technical support.
