1st Machinery Works Of North China Petroleum
[ Manufacturer ]Main business are Pipeline internal coating, Spiral-seam submerged-arc welded steel pipe, Special walking-beam pumping unit, Thread protector for drill pipe, Air Filter for Z12V 190B Diesel Engine, Diesel engine repairing series, Tanks for storing oil or water, Oil-extract
Shijiazhuang Guangpu Technology Co., Ltd.
[ Manufacturer Trader ]Main business are Frequency conversion oil recovery heating equipment, Pumping unit frequency conversion energy saving yield increase control cabinet