Joinsun?International?Business?Co.,Limited is one of the leading chemical products manufacturers anddistributors in China region,established in 1989. After development and growth in more than twenty years, We have already built a favorable sales network and established offices in Guangdong ,Jiangsu,Shandong and Hebei.With over 1500 employees and 600 various engineering technicians, consists of 6 subsidiary companies and 3 operating enterprises......