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Copyright：shandong tongtai group corporation Copyright @ 2017 All Rights Reservrd Address：No. 189, Liaocheng Road, Shandong, Rizhao City   Telephone：+86-0633-8285253　8286807 Fax：0633-8285655   Email：[email protected] 　 [email protected]　 Tongtai pump industry：0633－8285027/8286808 Tongtai Grain：0633－8285575/8285648 Pressure vessel：0633－8285027/82868088  Low voltage electrical apparatus：0633－8286857