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By certification 
Based on the absorption of the foreign technology and innovate, there are more than 20 invention patents. There are 2 vessels, 3 vessels, 4 vessels and 5 vessels. All the parts are made of stainless steel 304(inside and outside of pipeline and tanks are polished very well). In the production process, we will make a very strict inspection on welding. The quality of our products reaches the first class in China.
