Interior decoration, window replacement, balcony sealing, and sunroom construction have long evolved beyond the simple act of "installing a window." Street-facing spaces require soundproofing, high-rise units demand safety, spacious flats and villas need energy efficiency and aesthetics, while old home renovations must prioritize durability and weatherproofing. Choosing the right brand directly impacts living comfort and long-term hassle-free maintenance.

Joysland Doors & Windows, as the sole authorized operating center of British Lan-system in China and a direct-branded factory in Shanghai, has been specializing in high-end system doors and windows customization for 13 years. With a closed-loop full-chain process from design, production, and installation to after-sales service, it has become a long-term preferred choice for high-end private residences, quality-upgrading households, designers, and renovation companies.

1. Why Choose Lan-system System Windows and Doors for Customization?

1. Brand Hard Power: A Shanghai-based major manufacturer with full authoritative backing

Established in 2013, it is a high-tech enterprise, a specialized and sophisticated "little giant" enterprise, and one of the top ten brands in China's door and window industry

Shanghai Songjiang: 15,000㎡ independent production base, 3 precision CNC production lines, Northern Intelligent Base to commence operations in 2026, annual production capacity of 300,000㎡, fastest lead time of 15 days

Exclusive authorization of the Lan-system system technology by the UK, with quality benchmarked against European standards

The product has obtained international certifications such as CE, INTERTEK, and NFRC, and is exported to regions including the Middle East, North America, and the UK

2. OEM Closed-Loop Service: Reject outsourcing for more stable installation and faster after-sales support

Many door and window brands "outsource sales and installation," which often leads to issues like water leakage, air leakage, and post-sales service disputes.

Lan-systeme Systems adheres to original manufacturer production, installation, supervision, and after-sales service. With in-house design, production, installation, supervision, and after-sales teams, the entire process from measurement to delivery is fully controllable. It features low failure rates, hassle-free maintenance, and a service life of ≥25 years.

II. Lan-system System Doors and Windows Customization: Covering All Scenarios to Address Owners' Core Pain Points

Shanghai's climate is humid, with frequent typhoon seasons, high urban noise levels, and stringent safety requirements for high-rise buildings. Lan-system has specifically developed three core systems—360 Comfort, Low-Carbon Energy Efficiency, and Smart Ultra-Narrow—to comprehensively address six key spaces: entrance halls, living rooms, terraces/sunrooms, bedrooms/children's rooms, kitchens, and bathrooms.

Must-Choose Bestseller Series (Most Popular Among Homeowners)

80 Series Inward Opening and Inward Sliding Windows

6060 T66 high-precision aluminum, wall thickness 1.8mm, triple glazing with two chambers filled with argon gas

Sound insulation 35–45dB, passive window K≤0.79, energy-saving 30%–50%

Airtightness Class 7, Watertightness Class 5, Wind Pressure Resistance Class 9, Peace of Mind During Typhoons

80 Series Inward Sliding Window (Sixth Generation)

Occupies no indoor space, safer in high-rise buildings, and provides gentle ventilation