OSI GROUP is a leading High-tech and Environment-friendly enterprise in chemical industry with 20 years history which was developed from Zhejiang Ositer Chemical Co., Ltd. We are mainly engaged in the R&D, manufacture, sales and after-sales service of optical brightening agents, with more than 50 kinds of products and annual outputs of over 20, 000 tons. OSI Group now has formed a nationwide sales and supply network, and actively promote internationalization strategy, by setting up an extensive ...
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