Established in 1997
In p>1998, the combined stainless steel water tank won several design patents
In 1999, the combined stainless steel water tank won a new product in Shanghai
In 1999, it obtained the qualification of manufacturing D1 and D2 pressure vessels
In p>21, it passed the ISO91 quality certification
In p>24, it obtained D1. Design qualification of D2 pressure vessel
In p>26, it obtained ASME "U" steel seal certification
In p>28, Tonghua brand Baosteel 444 stainless steel water tank was settled in China Pavilion of Expo
In p>29, it obtained design and manufacturing qualification of A2 pressure vessel.