3000 series aluminum plate can also be called rust-proof aluminum plate. China's 3000 series aluminum plate production process is relatively excellent. The 3000 series aluminum plate is mainly composed of manganese. The content is between 1.0 and 1.5. It is a series with good anti-rust function. Generally used in humid environments such as air conditioners, refrigerators, car bottoms, etc., the price is higher than 1000 series, which is a relatively common alloy series.

7075 mainly contains zinc. It also belongs to the aviation series. It is an aluminum magnesium zinc copper alloy, a heat-treatable alloy, a super-hard aluminum alloy, and has good wear resistance. The 7075 aluminum plate is stress-relieved, and will not deform and warp after processing. All the super-large and super-thick 7075 aluminum plates are subject to ultrasonic detection, which can ensure that there are no sand holes and impurities. 7075 is an aluminum alloy with high hardness and strength, which is often used to manufacture aircraft structures and futures. It requires the manufacture of high stress structural parts and moulds with high strength and strong corrosion resistance. Basically relying on imports, China's production technology needs to be improved.