How many companies in Yongkang specialize in polymer materials engineering?

Six. Official website, the market supervision department of Yongkang City, Zhejiang Province, shows that as of July 7, 2023, there are six companies specializing in polymer materials engineering in the district, namely Daoming Optics Co., Ltd., Yongkang Chengtai Chemical Co., Ltd., Yongkang Mu Qing Industry and Trade Co., Ltd., Shenglong New Materials Co., Ltd., Millennium Group Co., Ltd. and Zhejiang Kathy High-tech Materials Co., Ltd.