Mudanjiang Qianjin Boron Carbide Co., Ltd

Also known as Black Diamond, with a molecular formula of B4C, it is usually a gray black micro powder. It is one of the three hardest materials known (the other two being diamond and cubic boron nitride), used in tank armor, bulletproof vests, and many industrial applications. Its Mohs hardness is 9.3. It was used in the 19th century as a gold advancement boron carbide, Mudanjiang advancement boron carbide, Mudanjiang boron carbide, Heilongjiang boron carbide, boron carbide, Northeast boron carbide, Mudanjiang advancement boron carbide Co., Ltd