My company in 2012 for the Ningbo sea more new material limited company 1 million 380 thousand tons / year of propane and carbon four mixed use project "made of 15 6000m3 spherical tanks, tank diameter 22600mm, thickness of 52mm, with the 12 pillar structure in the form of 4 hybrid, this product is currently the highest design pressure (1.77MPa), the largest volume the propane tank, the success of this project, the Dalian Jinding tank manufacturing and then climb the peak.