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LANGE Invisible Hinge Aluminum Interior Casement Door Luxury Modern Swing Glass Door Minimalist Seamless Design for Villa
Product Description
LANGE is a Top 10 system window brand in China with independent intellectual property and strong expertise in aluminum window and door systems. With a 20,000 m² manufacturing facility and a professional team of 100+ designers, we combine advanced manufacturing capabilities with international design standards. As an authorized service provider for leading brands such as SCHÜCO (Germany) and YKK (Japan), LANGE delivers precision-engineered, customized window and door solutions for residential, commercial, and architectural projects worldwide.
Why Choose Us
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Reinforced Aluminum Profiles + Multi-Point Locking: Thickened aluminum profiles and multi-point locking systems provide enhanced stability, security, and wind resistance.
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Standardized Production & Quality Control: Standardized manufacturing processes and strict batch inspections help ensure consistent quality and reliable performance.
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Fully Customized Solutions: Customize size, color, glass, hardware, opening style, and other specifications according to your project requirements.
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Factory-Direct Supply: Direct from our manufacturing facility with flexible MOQ and competitive pricing for bulk orders.
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Professional Overseas Support: Dedicated technical support, a 5-year official warranty, and 24/7 online service provide reliable assistance before and after your purchase.
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.
Products Description
01
Durable Aluminum Frame
High-strength aluminum alloy provides excellent durability and structural stability for long-term use.
02
Excellent Sealing
Multi-point locking and high-quality seals help improve airtightness, sound insulation, and weather resistance.
03
Wide Opening
Hinged design provides a large opening area for better ventilation and easy access.
04
Energy Efficient
Optional thermal break profiles, double/triple glazing, and Low-E glass help improve thermal insulation and energy efficiency.
05
Secure & Reliable
Strong hardware and multi-point locking systems provide enhanced security and stable operation.
06
Customizable Design
Custom sizes, colors, glass types, hardware, and opening directions are available for different project requirements.
Product Parameters
For bulk orders, we can customize hardware handrails according to your project requirements.
01 | CUSTOM SIZE
Non-standard dimensions can be customized according to your drawings, measurements, or project requirements.
02 | GLASS OPTIONS
Choose from Clear, Low-E, Tempered, Laminated, and Insulated Glass to meet different lighting, thermal, and safety requirements.
03 | OPENING SYSTEM
Available in Fixed, Manual, or Electric configurations according to ventilation and project requirements.
04 | FRAME & COLOR
Aluminum profiles, frame dimensions, surface finishes, and RAL colors can be customized.
05 | ACCESSORIES
Hardware, sealing components, and supporting accessories can be selected according to the skylight design and installation requirements.
06 | PROJECT-BASED SOLUTIONS
Our technical team can develop the skylight configuration based on architectural drawings, site conditions, climate, and regional requirements.
Product Showcase
Main Markets: USA / Canada / Australia / New Zealand
Customer Feedback
Quality You Can Rely On
LANGE maintains strict quality control from raw materials and precision processing to assembly and final inspection. Advanced CNC equipment and standardized production processes ensure consistent product quality. Every order is carefully inspected before shipment to ensure it meets the agreed specifications and project requirements.
Strict Quality Control · Consistent Quality · Reliable Performance
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.
Frequently Asked Questions (FAQ)
Are you a factory or a trading company?
Yes, we have our own manufacturing factory with over 22 years of experience, located in Zhengzhou, Henan Province, China.
How does the ordering and purchasing process work for overseas buyers?
With over 20 years of export experience worldwide, we provide full technical and logistical support. The complete workflow is seamless: Order Confirmation → Technical Drawing Approval → Production → Quality Inspection → Shipment & Delivery.
What are your payment terms and accepted payment methods?
We accept T/T (30% deposit, 70% balance before shipment) or 100% Irrevocable L/C at sight. Payment methods include Wire Transfer (T/T), Credit Card, VISA, PayPal, Apple Pay, and online transfer.
How long is the delivery lead time?
Delivery time depends on dimensions, glass configuration, color, hardware selection, and order volume. Once drawings and technical specs are finalized, we issue a formal production schedule. We advise allocating adequate time for custom fabrication and inspection.
Can products be fully customized to my project specifications?
Yes. Doorway/window dimensions, number of panels, opening direction, glass configuration, profile color, lock system, and track type can all be tailored. Please send us your measurements, installation photos, or architectural drawings for a tailored solution.
