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Ningbo Changrui New Building Materials Co., Ltd
Address: feldspar industrial zone, luotuo town, ningbo city, China
Changrui new new "green environmental protection" security door Chang ruixin also pioneered the technology of "no solder joint for door frame" in China, which has reduced environmental pollution. The main feature of this technology is that the frame body is connected with bolts in series among the parts, and then tightened with nuts. The inner wall of the door and the outer wall are coated with colored plates, and the inner wall and the outer wall are stitched together.