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?Shou & Fu Chemical? is the leading brand of Zhejiang Yangfan Holding Group Co., Ltd in chemical field. The company has 27 years experiences in developing and producing on fine chemicals which contain ?-SH? or ?-S-? group. The company has successfully developed over 500 sulfur-based and mercapto-containing intermediates, and has abundant experiences of OEM on sulfur-based products. Meanwhile, the company actively create reliable production base and supplier of photoinitiators. View more >>