Contact us, service center, Zibo Dugao Chemical Co., Ltd., Zibo Dugao Chemical Co., Ltd. website: www.dugaochem.com contact: Zhao Changhui (Sales Manager) mobile phone: 13589586915 mailbox: alice@dugaochem.com phone: 0533-5810622 (Sales Department) 0533-5823169 (Purchasing Department) 0533-5822778 (Technology) Fax: 0533-5815111 address: No. 6, Shuang Shan thousand Li Road, Zichuan Economic Development Zone, Zibo City, Shandong province (old factory: No. 101, Liao Zhai Road, Hongshan Town, Zichuan District, Zibo, Shandong province)