人妻久久精品天天中文字幕,欧洲日本人妻多人色视频,人妻有码av中文字幕久久,午夜免费在线视频日韩欧美福利,少妇爆乳无码av专区网站寝取,中文字幕高清无码专区

I. IntroductionAfter plating various metals on the surface of aluminum and aluminum alloy, the physical or chemical properties of the surface can be obviously improved.

The aerospace industry needs lightweight and sturdy metal materials that require higher levels of durability, compressive strength, and high temperature resistance.

After plating various metals on the surface of aluminum and aluminum alloy, the physical or chemical properties of the surface can be obviously improved. Long process flow and many processes.2.

Polyurethane topcoat and alkyd topcoat can be used. Prospect of corrosion protection technology for aluminum alloy for ships Aluminum alloys have been widely used due to their various advantages.

The heat dissipation and good appearance of aluminum alloys have surpassed the current plastic materials, and the weight of the weight itself is irreplaceable by plastics.

Aluminum products processing is a daily necessities and industrial products obtained through a series of processing and packaging processes. What is the treatment of aluminum products processing?

He said his company had just agreed to rent space from Rusal to store more aluminum ingots.A contractor at the Sayanogorsk plant said that the stacked aluminum ingots are increasing rapidly.

In the process of sputter coating, the sputtering target needs to be installed in the machine to complete the sputtering reaction. The sputtering machine has high specificity and high precision.

The surface quality of the coil, sheet and mold will affect the quality of the final stamped parts.(10) Poor material beyond the rules;(2) Mold: Iron powder is generated when the drawbead is burned;

Shanghai Aluminum opened higher overnight and rushed to the 14,000 yuan/ton integer mark.Shanghai aluminum main force 1805 contract: last night's opening price rose 120 yuan, or 0.87%;