- Production Limitation Lead to the Crazily Rising of Price八 29, 2018
- Economic Development and Environmental Protection Go Hand in Hand八 29, 2018
- OD 3000mm above Big size pipe fittings and flange八 28, 2018
- HEBEI HAIHAO GROUP will attend the 8th Tube China八 28, 2018
- Threaded flanges 八 27, 2018
- Power Plant Restoration Project in Serbia八 17, 2018
- Van Leeuwen in Middle East Come to Visit Us八 07, 2018
- HRSG Project of SamsungGroup in Qatar八 07, 2018
- Haihao Group attended the 4th INDONESIA TUBE & PIPE EXPO 2018七 27, 2018
- Haihao Group offer excellent piping solutions for sewage treatment project in Iraq七 25, 2018
- Cooperation with Van Leeuwen for Egypt Project七 23, 2018
- Elbow and Bend七 16, 2018
- THE DIFFERENCE BETWEEN PIPE BEND AND ELBOW七 16, 2018
- BV Test七 16, 2018
- Packing type of flange, pipe fitting and steel pipe七 16, 2018
