Sanitation Vehicle manufacturers Our History We are the manufacturer of truck trailer since 1982. The first company in our local. And we do export truck trailer since 2007, and the top 1 in produce cement tanker trailer. 1982 Founded by Mr. Yang 1985 Design the first dolly trailer 1990 Starting produce one axle trailer 1993 Technical improvement, company was registered 1995 Two axles trailer was produced 1999 Rebuild and enlarge production line 2000 Got the Private production qualification 2001 First container transport semi trailer was finished 2002 First low bed semi trailer was finished 2003 Tongya bulk cement tanker semi trailer