wholesale Pentadecanedioic Acid Our History Our Factory Changyu Holding Group Co., Ltd. (hereinafter referred to as Changyu Group) is located in Zibo National New&High-tech Industrial Development Zone, Zibo City, Shandong Province, a famous historical and cultural city in China. Changyu Group is an enterprise group with high-end new materials and fine chemicals as its main business.website:http://www.changyuintl-e.com/
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