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Tọrọ ntọala na 1992, Chengdu Tianhe tungsten carbide ngwaọrụ Co., Ltd. bụ ọkachamara hi-tech tungsten carbide ngwá ọrụ emeputa nke dị na Wenjiang Haixia Liangan Science na Technology mmepe mpaghara.Ọ na-ekpuchi gburugburu 14000 square mita na nwere n'elu 100 ahụmahụ ọrụ.

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