专业从事于：

zhejiang ganghai industrial co.,ltd (its former was no.1 steel pipe factory),which was set up in 1991 and put into production in may ,1992 formally. over ten years, it has developed a large scale enterprise which owns 1000 staffs and more than 100 million fixed assets. it covers and area of 100 thousand square merters including cold-strip factory, pipe make factory, steel pipe goods factory, scooter factory.