What are the common knowledge of safe use of Tianjin chemical barrel?

Chemical barrels have good heat resistance and cold resistance, good hardness, tensile strength, electrical insulation and toughness, and good chemical stability. They are almost insoluble in any organic solvent at room temperature, resistant to corrosion of various acid, alkali and salt solutions, and have excellent environmental stress cracking and thermal stress cracking resistance, high surface hardness and good dimensional stability. With the development of internationalization, plastic drums have gradually become the main products of liquid packaging.
Plastic fittings are light and not fragile. Most of the chemical plastic barrels, pots and bottles for daily food are made of polyethylene or polypropylene, of which polyethylene is more common. Polyvinyl chloride can also be made into barrels, basins and other containers, but like film, it can not store food, especially oil and wine. There are also pulse formaldehyde plastics commonly known as "electro-jade" and melamine formaldehyde plastics commonly known as "melamine". The raw materials contain formaldehyde. In the production process, free formaldehyde may appear in tableware if the polymerization is not good. Formaldehyde is a highly toxic substance, if mixed with food, it will seriously damage human health. Therefore, we must use good quality "electro-jade" and "melamine" tableware and containers. For inferior products, the relevant departments should strictly check to prevent them from leaving the cage.