Guangdong Chengyu Chemical Technology Co., Ltd. Company Address： Room 731, Building 1, Huayun Building, 101 Zhenxing Road, Huaqiangbei, Futian District, Shenzhen, Guangdong Province, China Contacts：Mr Yuan Telephone：+86 19925422917 Mailbox：yuanchao@chengyuchemical.com
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