1. The polyethylene tank process: it is the use of polyethylene (LLDPE LLDPE, high density polyethylene HDPE) as raw materials in the rotational molding mold. Features 2 polyethylene tanks: Polyethylene foreign language referred to as PE. Maximum application temperature is low density polyethylene 60 ℃, high-density polyethylene 70 ℃. Minimum application temperature of -70 ℃. With no welding seams, no leakage, non-toxic, anti-aging, shock, corrosion resistance, long life, meet the health standards and so on. It makes up the tank rigid plastic rotational strength is poor, no pressure, temperature difference of shortcomings. Product lining surface flat, smooth, firm, compared with traditional steel-lined plastic plate sump, steel-lined rubber tanks, steel-lined glass steel tank, has a better resistance to corrosion, no leakage, no peeling, wear loss, can withstand a certain pressure, can withstand higher temperatures, longer life, etc., the price is lower than the traditional tank with the specifications, is an ideal container for storing corrosive liquid. Thus is an extremely excellent corrosion tank. ? Tank Polyethylene materials can be stored: (1) an inorganic acid (2) an organic acid (3) and the hydroxide base (4) elements, gas, and other inorganic compounds (5) alcohols, aldehydes, ketones, ethers, . esters, hydrocarbons and petroleum products (6) halogenated organic compounds, amines, phenols, other organic compounds (7) other elements and compounds, industrial fluids and products, food and vegetable oil, air, water 4. Its main purpose: the use of performance much better than traditional fiberglass containers, plastic welding containers, steel-lined steel containers of glass, steel liner rubber container, it is most ideal liquid chemical storage and transportation equipment, in quite a large extent can replace stainless steel, nickel, titanium and other materials products, products widely used in chemical, pharmaceutical, biotechnology, pesticides, dyes, metallurgy, rare earth, electroplating, electricity, textile, printing and dyeing, environmental protection, machinery, brewing, food and other industries.