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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
✓ Reinforced Profiles & Locking
Thickened aluminum profiles and multi-point locking systems provide enhanced stability, security, and wind resistance.
✓ Standardized Production & QC
Standardized manufacturing processes and strict batch inspections help ensure consistent quality and reliable performance.
✓ Fully Customized Solutions
Customize size, color, glass, hardware, opening style, and other specifications according to your project requirements.
✓ Factory-Direct Supply
Direct from our manufacturing facility with flexible MOQ and competitive pricing for bulk orders.
✓ 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
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
Our technical team can develop the skylight configuration based on architectural drawings, site conditions, climate, and regional requirements.
Product Showcase
Customer Feedback & Quality Assurance
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
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)
Q
Are you a manufacturing factory?
Yes, we have our own manufacturing factory with over 22 years of engineering and production experience, located in Zhengzhou, Henan Province.
Q
This is my first time ordering from China. How does the process work?
Do not worry. We have over 20 years of export experience worldwide and provide dedicated professional support. We guide you through the clear and seamless procedure: Order Confirmation → Production → Quality Inspection → Shipment → Final Delivery.
Q
What payment methods do you accept?
We accept T/T (Wire Transfer), online bank transfer, Credit Card, VISA, PayPal, Apple Pay, and L/C at sight. Orders can be paid 100% in advance or via deposit with balance prior to shipment.
Q
What are your standard payment and deposit terms?
For T/T: 30% deposit upon order confirmation, with the remaining 70% balance paid before shipment. For L/C: 100% irrevocable Letter of Credit at sight is supported.
Q
How long is the production and delivery cycle?
Delivery lead time depends on dimensions, glass configuration, color finish, hardware selection, degree of customization, and total order volume. Once drawings and payment terms are locked in, we deliver an accurate production schedule.
Q
Can the products be customized to specific project requirements?
Yes. Opening dimensions, number of panels, opening direction, glass makeup, RAL profile color, lock types, and track designs can all be fully customized. Simply share your measurements, site photos, or architectural drawings for a tailored engineering calculation.
