Although the consumption of steel materials has decreased year by year, the consumption of high-strength steel has increased considerably. High strength structural steel conducive to the lightweight of cars.

Aluminum processing plants usually melt primary aluminum ingots, secondary aluminum ingots, process wastes with master alloys or alloying element additives to produce aluminum alloy melt and then cast into slab ingots, round billets or casting-rolled coils as required for subsequent rolling or extrusion production.