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Exothermic Welding Powder for Railway, Expressway and Airport Construction (Copper oxide, Copper, Aluminum) 10 PCS/Box Made in China, Find Details and Price about Welding Powder Welding from Exothermic Welding Powder for Railway, Expressway and Airport Construction (Copper oxide, Copper, Aluminum) 10 PCS/Box Made in China - Electric Powertek Company Ltd.