1.IQC inspects to ensure all raw materials 100% comply with the local national standards , and provide safety and health product to customers.

2.PQC inspect:ensure 7 steps to produce high-quality products,18 years of production experience is quality assurance.

3.Pneumatic test

1)Jacket:1～5/5～10bar (according to customer requirement）

2).pressure maintaining：72hours.

4.PU foam insulation to keep temperature stable. Tank surface adopts pickling passivation.

5.Skilled welder operation,which welding coefficient 0.85.

6.Inner tank with mirror polishing,which Ra=0.22μm～0.40μm.