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CANWIN BUILDING MATERIALS was founded in 2003 and reformed from the state-owned Zhejiang Lanxi Special Cement Company established in 1978. It is now a national company specializing in the research, development and industrialization of high molecular materials such as concrete durability enhancement materials (rust inhibitor series, preservative series), concrete temperature suppression materials (hydration heat inhibitor), ultra-fine grouting materials, and moisture-regulating boards The enterprise that has won the Science and Technology Progress Award has participated in the construction of many provincial and national key projects as well as foreign aid projects of the Ministry of Commerce. Such as the renovation project of the Afiniam Dam in Senegal, the Ningbo-Zhoushan Railway in Zhejiang Province, the second phase of the Ningbo-Zhoushan Expressway in Zhejiang Province, the newly-built Qiantang River Bridge in Hangzhou, Zhejiang Province, the Zhoushan-Daishan Cross-sea Bridge of Ningbo-Zhoushan Port in Zhejiang Province, the Yushan Bridge and the Fuchimen Bridge, the Xiushan Bridge in Zhoushan, Zhejiang Province, the Guanshan Bridge in Zhoushan, Zhejiang Province, the Shenjiamen Guanyin Cross-sea Bridge in Zhoushan, Zhejiang Province, the Beikou Bridge of the Oujiang River in Wenzhou, Zhejiang Province, and the Oujiang River Estuary in Wenzhou, Zhejiang Province The underground utility tunnel, Fuzhou Second Airport Expressway, Jiangsu Dafeng Port Railway, Qingdao Jiaozhou Bay Second Undersea Tunnel, Qingdao Jiaozhou Bay Undersea Tunnel, Gaoligong Mountain Tunnel of Yunnan Dali-Ruili Railway, Xiamen Second West Channel, Zhanjiang State Reserve Project, Guangzhou Gaode Land Corridor Project, Guangxi Fangchenggang Shuangdun Fishing Port Project and other engineering projects The company is equipped with advanced domestic ultrafine powder system production lines and polymer material (sheet) production lines, as well as advanced testing instruments, which ensure a 100% product qualification rate. The company's annual production capacity is 100,000 tons.