The price increase of aluminum alloy stems from the rebound of upstream aluminum price. After July last year, the average domestic spot aluminum price dropped from 18000 yuan/ton to 12000 yuan/ton. However, since the second quarter of this year, the domestic aluminum price has risen from1231yuan/ton to 13442 yuan/ton, with an increase of 9.2%.

The differences between stainless steel and aluminum alloy are as follows:

1. In terms of price, stainless steel is expensive and aluminum alloy is cheap.

2. The hardness of stainless steel is higher than that of aluminum alloy.

5. The surface treatment of aluminum alloy is rich, including electrophoresis, spraying and anodizing, and stainless steel is less.

6. Aluminum alloy with poor surface treatment will be oxidized and spotted after being used for a long time. Stainless steel is relatively good, but its composition is not up to standard or it rusts due to careless maintenance.

4. There are many manufacturers with bad stainless steel, mainly cutting corners in material thickness and composition.