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河北天擇重型機械有限公司專業生產齒輪減速機,ZDY、ZDZ硬齒面中硬齒面圓柱齒輪減速機JB/T8853-2001
Hebei Tianze heavy machinery Co., Ltd. specializes in the production of gear reducer,ZDY, ZDZ hard tooth surface in hard tooth surface cylindrical gear reducer JB/T8853-2001