西西人体44,亚洲va韩国va欧美va,特黄特色三级在线观看,欧美老熟妇乱子伦视频

　　 paint production of aluminum veneer is divided into two small steps: the first step is sheet metal processing. The important thing in this process is to grind the aluminum veneer into the shape and size required for construction after cutting, folding, bending, arcing, welding, and grinding the flat plate. The second step is lacquer. Lacquer is to paint paint or paint powder on poorly ground sheet metal.

　　 lacquer is divided into two types, one is natural lacquer and the other is machine spraying. Machine paint is generally only suitable for regular flat plates, but this kind of aluminum veneer is difficult to use in theoretical applications. Most domestic manufacturers use artificial paint. Natural paint is a risky job, because the volatility and toxicity of paint or powder are higher than those of pseudo-weak, it is very difficult to form a chronic benzene series poisoning, which slightly impacts the Weinan. A small advantage of natural paint is that the color can be chosen regardless of the amount, so the roll coating of aluminum-plastic panels must reach a certain amount to dry enough for processing. The processing process of aluminum composite panel is simpler than that of aluminum veneer. The important thing is that there are four small processes of formation, color matching, mixing and trimming. These four processes are mechanical consumption except for trimming. It can be seen from the processing process that aluminum-plastic panels have certain advantages in environmental protection and war safety. In addition to the simplicity of the sheet metal processing process of aluminum veneer, some private workshops have also turned into a turning point, which slightly impacts the stability of the market quality of aluminum veneer.

The above is the relevant description about the processing of seamless aluminum veneer products.