When customizing doors and windows in Shanghai, there are many pitfalls: selling inferior products as good, attracting traffic at low prices, maliciously adding items, outsourcing installation, and losing contact with after-sales service... Many homeowners spend a lot of money but buy inferior doors and windows, which have air and water leaks, poor sound insulation, and are not durable. If you want to customize doors and windows in Shanghai without stepping on pitfalls, identify these 5 points of Lan-system, which are worry free, cost-effective, and reassuring.

1. Look at the factory: Local direct sales without OEM

Lan-system has a 15000 square meter self owned factory in Songjiang, Shanghai, with 13 years of independent production, without OEM, contract manufacturing, or subcontracting. The factory is equipped with 3 CNC precision production lines, standardized production, and controllable quality. Choose factory direct sales, no middleman markup, more transparent prices, and more stable after-sales service.

2. Check the system: European original technology is more stable

Lan-system is the only authorized operation center of Lan-system Systems in China. The technology originates from Europe and its performance has been verified for a long time. Passive energy-saving, sound insulation, sealing, and safety all meet advanced standards, far exceeding ordinary bridge cut aluminum windows, and durable for more than 25 years.

3. Check the configuration: genuine materials without falsification

Lan-system comes standard with 6060 T66 ultra high precision aluminum material, PA66GF25 multi cavity insulation strip, EPDM sealing strip, German imported hardware, hollow tempered glass/three glass two cavity glass, supports on-site inspection and third-party testing, and refuses to recycle aluminum, inferior insulation strip, and fake tempered glass.

4. Installation: The entire process of the original factory is not outsourced

Lan-system insists on original manufacturing+original installation+original supervision+original after-sales service, with its own professional team, standardized construction, and proper sealing to avoid water leakage, air leakage, and poor opening caused by outsourced installation. Supervisors conduct item by item acceptance, ensuring quality assurance.

5. Check after-sales service: Shanghai local quick response

Lan-system has multiple experience centers and service outlets in Shanghai, with a 24-hour after-sales team and lifetime maintenance. Not making a one-time purchase, one-time installation, long-term service, completely solving the pain point of no after-sales service.

In Shanghai, customizing doors and windows is not a small matter, but a major consumption that affects the quality of living for 20-30 years. The low price trap seems to save money, but later maintenance and replacement costs are higher. Choose the reliable brand Lan-system for customized doors and windows in Shanghai, with transparent quality, fair price, and closed-loop service. It can be installed in one go, providing peace of mind and comfort for decades.