Hangzhou Heng Kun Import & Export Co., Ltd is a specialized private chemical company  combined manufacturer and purchase. Situated in Xiao shan Economics and Technological Development Zone, our company has the right of self-supporting export and supplies various chemical products, such as: zinc oxide, titanium dioxide, carbon black, iron oxide red/ iron oxide yellow/ iron oxide blue/ iron oxide black/iron oxide green, chromium oxide green, PER, caustic soda(lamellar/pearl partical),Boric acid, sodium benzoate, sodium formate, lactic acid,oxalic acid, glacial acetic acid and Tin ingot. On one hand, Chang Ao has always emphasizing on attitude of constantly innovate, bravely endeavor, strictly pragmatic and efficiently work over years. In the other hand, we specially pay attention to exploration and introduction of high-tech productions. Recent years, the advanced technology, first class equipments, the complete monitoring system and high-quality products enable us to enlarge our coverage in both domestic and overseas markets. Not only are we satisfied the domestic need but make our products enter into hundreds more countries and regions in western Europe such as America, Japan, South Korea, Canada and Australia as well as Southern Asia, and establish the figure of honest by the superior products and considerable sale service.