雙霸機(jī)械（上海）有限公司專業(yè)生產(chǎn)齒輪減速機(jī),DB螺旋錐齒輪DH平行軸斜齒輪減速機(jī)
Double ba machinery (Shanghai) Co., Ltd. specializes in the production of gear reducer,DB spiral bevel gear DH parallel shaft helical gear reducer