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Hangzhou Rainbow Import & Export Co.,Ltd
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 the developing and producing PVP series both in technical grade and cosmetic grade.
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Hangzhou Rainbow Import & Export Co.,Ltd
Our Factory
Our Factory
The company has the GMP production lines of 600 tons annually of Povidone at low molecular weight ( Povidone K12, K15, K17, K25 and K30), 800 tons annually of Povidone at high molecular weight ( Povidone K60, K90, K120), 300 tons annually of Povidone Iodinated with high stability and 100tons annually of Chondroitine Sulfated Sodium.

Adhering to the people-oriented, guests first principle of integrity service, the method of doing things carefully.

Adhering to the people-oriented, guests first principle of integrity service

The method of doing things carefully.

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