1. Non-standard pure aluminum ingots refer to parallel-imported aluminum ingots. The purity of standard aluminum ingots is 99.7. Non-standard aluminum ingots are aluminum ingots lower than this standard.

2. Pure aluminum ingots: Aluminum is the second most abundant metal element found on the earth’s surface after iron (Fe). Since the invention of electrolysis, humans have obtained bauxite from the earth’s surface and refined it. Aluminum with high purity (above 99.7) is pure aluminum ingot. If used directly in casting, the toughness of the casting is good, but it has no strength and poor physical properties.