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Lead Brass (Mainly name”Free Cutting Brass”); Lead is virtually insoluble in Brass, State was free distribution of particles on....
Brass is a metal alloy made of copper and zinc, if only consists of copper and zinc....
Tin phosphor bronze is an alloy of copper, it is the earliest human application of alloy, whose usage history is about 4000 years....
It is a kind of environmental protection material, which can totally meet the newest environment-protection....