Increase material wealth and speed up the development process. The chemical industry mainly involves three major fields - cylinder, tank, vessel, sub-cylinder, steam sub-cylinder, equalizing pipeline pressure, removing moisture impurities in steam; vacuum tank, diaphragm tank, oil storage tank, etc., buffer pressure, prevent leakage, and more Good penetration, extended service life; heat exchanger, activated carbon filter, high working efficiency, low operating cost, saving manpower and material resources, good filtering effect, long-term anti-corrosion and no pollution.