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The C5 series of new oxygen breathing doors and windows is a new type of window type fresh air product that achieves ventilation and filtration function by adding a fresh air ventilation window sash on the basis of the Lan-system doors and windows. It uses the principle of positive and negative air pressure to introduce fresh air while expelling indoor polluted gases.
Lan-system is a professional and young supplier of door and window system solutions. The brand was born in London, England. Its team includes R&D experts from Europe’s top door and window systems, as well as young designers from major high-end profile manufacturing, construction hardware, sealing components and other companies. After team integration and integration, it has achieved success in the field of European door and window systems. Vulgar grades. Product design is focused on targeting th
Wicona, Germany, was founded in Ulm, Germany in 1948. Wicona is specialized in the research and development of doors, windows, curtain walls and sunshade products; after 70 years of development, Wicona has obtained 176 door and window technology patents; In Europe, WICONA has become synonymous with high-quality doors and windows; in China, Wicona WICONA has become the first choice for high-quality buildings in China with its leading German door and window curtain wall technology and excellent pr
