... machine1.Mold materials:mineral power, metal power, coal power, coke power and other material.2.Characteristics of products: high ... and high hardness3. Note: The press roller of the machine uses 65mm rigid material with good abrasion resistance, lengthening ... briquetting:1. Color and black metallic mine powder2. Coal powder, Coke powder, Lignite, etc,3. Charcoal powder, fireproof materials, ...