Luoenna

Polyurethane (PU for short) is an organic polymer material synthesized by the reaction of polyisocyanate and polyol. Polyurethane has superior performance. Compared with rubber materials,...

The smelting methods used in the domestic aluminum industry generally include batch smelting and semi-continuous smelting. The batch smelting method refers to a smelting method...

Die-casting machines are divided into general die-casting machines and special die-casting machines according to the scope of use; according to the clamping force, they are...

Automobiles are the main flexible means of transportation on land, and the automobile industry is one of the most important basic industries in the national...