Time: 2017-08-28
On April 10, the 11th China Chongqing Hi-Tech Fair and the 7th China International Civil and Military Technology Expo (hereinafter referred to as "Hi-Tech Fair") opened at the Chongqing International
Time: 2017-08-28
Recently, the China Ordnance Group Inner Mongolia, a group of companies in the wind and wind company in China Petroleum and Natural Gas Group organized by the screw drilling equipment pricing pricing
Time: 2017-08-28
Northernwindandthunderandthecompanysignedanumberofexportcontracts,thelengthoftherequirementsbetween13.45-13.715meters.AccordingtothelatestdrillpipestandardAPI(AmericanPetroleumAssociationgeneral)5DPsp