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Hhp Hehong Copper Bars C17200 C17300 C17500 JIS C1720 GB Qbe2 C1730 Qbeco for Non-Sparking Tools., Find Details and Price about Marine Tubes Copper Alloy Tubes from Hhp Hehong Copper Bars C17200 C17300 C17500 JIS C1720 GB Qbe2 C1730 Qbeco for Non-Sparking Tools. - Gansu Hehong New Materials Co., Ltd.