Weifang Shunfuyuan Chemical Co.,Ltd.is the biggest leading manufacturer of Para Toluene sulfonic acid(PTSA) and Sodium P-Toluene sulfonate in northern china, which was founded in Linqu county,Weifang city by Mr.Tan Bao in 2003.SFYCHEM ,2 km away from G25 highway exit ,is 240 km away from Qingdao Port. As an ISO9001 certified factory, SFYCHEM has been specializing in the production and R&D in this line for 12 years. It has the permanent assets of USD 1200,and professional technical team:2 postgraduates and 8 colleges, covering an production area of 26000 s...