Boron Carbide, black crystal power, is one of the hardest materials
known, ranking third behind diamond and cubic boron nitride. It is
the hardest material produced in tonnage quantities.
We can supply alll kinds of boron carbide (grit size and micro
powder) and boron carbide products.If you have any enquiry,do not
hesitate to contact Ms.Vicky , my e-mail is caeczhao[AT]yahoo.com
tel : 86 371 67639843
fax: 86 371 67640066