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