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  Sulfonation Test Units supplied by ZJS
5 kg/h membrane sulfonation test unit for Daqing Anda Xinweiyuan;
5 kg/h membrane sulfonation pilot unit for Changzhou Mingfan Fine Chemical Co., Ltd;
5 kg/h membrane sulfonation pilot plant, in Beijing Chemical Technology University.;
A small-scale chlorosulfonic acid test unit for testing PVDF membrane materials, in Xietong Chuangxi Co., Ltd;


Development of new sulfonation products by ZJS
Testing and development of independent petroleum sulfonats in PETROCHINA Changqing Oilfield;
Development and compounding of oil displacement agent of petroleum sulfonates in PETROCHINA Jilin Oilfield;
Testing and development of petroleum sulfonates in PETRO CHINA Qinghai Oilfield;
Testing and development of environmental-friendly petroleum sulfates in Shengli Oilfield Sinopec;
Development of SD sulfonation products in Lianhong (Jiangsu) New Materials Research Institute Co.,Ltd;
Development of SD sulfonation products in Jiangsu Suhua Group Co., Ltd;
Development of diphenylether sulfonation products in Shanghai Bonyou Industrial Co., Ltd;
Development of membrane sulfonation products from formaldehyde condensates of naphthalene sulfonate in Shanxi Sunshine Coke Group;
Development of alkylphenol series sulfonation products;