Natural tourmaline. Fine grade. Competitive price. Different specifications upon clients' request available. Best Service. Tourmaline specification can be upon clients' request. Size: 325meshes, 2um, 5um, 6um, 8um, 10um, 15um. Application: It is extensively used for the national defense, car, cigarette, textile, food preservation, medical treatment, cosmetics and other industries. Tourmaline ...