R32, chemically named difluoromethane, molecular formula CH2F2, is non-explosive, non-toxic, flammable, but still a safe refrigerant.
R22 is a member of the Freon family and belongs to the hydrochlorofluorocarbons, which is the most widely used medium and low temperature refrigerant.
Thinner is an organic solvent, in order to reduce the viscosity of the paint, thereby improving the performance of the paint and adding a liquid substance with good miscibility with the resin.
Curing agent, also known as hardening agent, is a class of substances or mixture that enhance or control the curing reaction.
Perching knife is a tool often used by painters, easy to use, can scrape, shovel, paint, fill, widely used in construction as well as life.
Paint rollers, also known as roller brushes, are divided into three types: long hair, medium hair, and short hair.It is a tool for roll coating of large area paint.