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Hefei Heyu Chemical New Materials Co., Ltd. Add: A404, No. 23, Hangbu Road, Boyan Science Park, High tech Zone, Hefei,Anhui, China 230000 Tel: +86-15256001178 Fax: 0551-63845482 E-mail:heyuchem@163.com , heyuchem@chemnet.com URL: m.zzjjybqj.com