Qingdao Leader Int\'l Trade & Inustry Co.,Ltd which is the sales office of Laizhou Toppower Petroleum Machinery and Green Chemicals Co.,Ltd. Focusing on producing petroleum machinery, chemicals for oil gas, tools, tube, casing tube coupling 15 years, most ...

Zhengzhou Xuda Machinery Co., Ltd. is a comprehensive manufacturing company with 20 years experience in city.Our main product are Wet-mix shotcrete machine,Dry-mix gunite machine, Hydraulic injection pump,Cement grouting pump,Squeeze pump,etc. With ...