Cleaning, refrigeration industry and people's production and life practice is closely related. With the development of society and the progress of Science and t...

The Tower packing refers to the tower packing in the packed column, whose function is to provide sufficient contact surface for the gas-liquid two-phase, and to...

Broadly speaking, all fluorine containing rubber can be called fluorine rubber, usually there are the following four types: Vinylidene fluoroethylene flu...