
Qingdao Longxiang Building Materials Co., Ltd. Owns 1set imported door and window production line in Germany, 4 domestic production lines such as Jinan Tianchen, and annual processing capacity of 100, 000 square meters. Compared with traditional aluminum alloy doors and windows, self-developed door&window systems (D&W CHAMPION brand, including 65series, 70series, 80series, 100series, 150series...etc ) and aluminum glass curtain wall system has reached the domestic advanced level in terms of water tightness, air tightness, wind pressure resistance, heat insulation, noise, beauty and practicality.