1 / 5
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.
Reinforced Aluminum Profiles + Multi-Point Locking
Thickened aluminum profiles and multi-point locking systems provide enhanced stability, security, and wind resistance.
Standardized Production & Quality Control
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 20,000m³ 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.
1. Durable Aluminum Frame
High-strength aluminum alloy provides excellent durability and structural stability for long-term use.
2. Excellent Sealing
Multi-point locking and high-quality seals help improve airtightness, sound insulation, and weather resistance.
3. Wide Opening
Hinged design provides a large opening area for better ventilation and easy access.
4. Energy Efficient
Optional thermal break profiles, double/triple glazing, and Low-E glass help improve thermal insulation and energy efficiency.
5. Secure & Reliable
Strong hardware and multi-point locking systems provide enhanced security and stable operation.
6. Customizable Design
Custom sizes, colors, glass types, hardware, and opening directions are available for different project requirements.
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.
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
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.
Q:
Whether are you a factory?
A: Yeah, we have our own factory, with over 22 years of experience. The location is in Zhengzhou, Henan Province.
Q:
As first time shopping online from China, how about the operation?
A: No worry, we have over 20 years export experiences to all over the world, we have the professional support, we would introduce all clear for you happy shopping: Order - production - shipment - delivery.
Q:
How about the payment term? How to pay?
A: We support 100% in advance; or deposit in advance, balance before the shipment. We accept TT (Wire transfer), online transfer, Credit card, VISA, Paypal, Apple Pay, and L/C at sight.
Q:
How long is the delivery cycle?
A: Delivery time depends on size, glass configuration, color, hardware, level of customization, and order quantity. Once the design, payment terms, and technical specifications are confirmed, we will provide a formal production plan. For customized projects, it is recommended to allow sufficient time for production, quality inspection, and shipping.
Q:
Can this product be customized?
A: Yes. Doorway dimensions, number of panels, opening direction, glass configuration, color, lock type, and track type can all be customized according to project requirements. Please provide the doorway width, height, installation location, and on-site photos before placing an order. We will calculate a solution based on the actual dimensions.
Q:
What are your payment terms?
A: T/T: T/T pays 30% deposit, 70% balance should be paid before shipment. L/C: 100% irrevocable L/C at sight.
