Grade a (98content) to produce high-purity tourmaline nano powder. Choose grade b (96content) to produce common tourmaline nano powder. We produce tourmaline series products by use of tourmaline powder. Diversified products can meet requirements of different industries. According to different granularity, the negative ion emission quantity is 2600-6500/cm3, and far-infrared emission rate is above 91. The granularity of the powder we can produce is from 45micron to 0.1 micron. Our price is moderate. According to different products, different adding proportion is needed