Aluminium scrap are avaiable in various quality and forms; they are identified by trading names...
The scrap copper are available in various types, identified by trade names (different from country to...
Aluminium alloys are traded on London Metal Exchange (LME) and its contract is conforming to...
High Grade primary aluminium is quoted on London Metal Exchange (LME). Its contract specifies a...
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The scrap copper are available in various types, identified by trade names (different from country to country) or international standards classifications (for example 
On the market there are different quality of brass ingots and designations: Delta C (ex-OT58), OT-A, Z-OT, OT-B. There are several manufacturers and brands, different sizes and minimum lots.