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Our History 1992 Zhejiang Sunflower New Material Co.,Ltd. which was predecessor of STD, engaged in PVP, was set up and Mr. Wu Jiaxiang,the chief expert of the state’s R&D project for PVP in China, was appointed as the general manager. 2002 Changed into a private company, Hangzhou Sunflower Technology Development Co., LTd.(STD) was set up and continuing th... [Details] |