... color chalk1. Introduction of the dustless chalk machine/manual chalk machineThis series include: KY800-1-2 ... the product quality, the output of the chalk bright and clean and beautiful. This machine ... type and set DuoZhong, thick, thin and long chalk, short, can also according to customer need ... 3. The technical data of dustless chalk machine/manual chalk machine model No.:KY-800-6output:380000 ...