HNYL-400 chalk machine CaCO3 dustless chalk machine : 1.Reasonable price 2.Firm structure 3.Electricity School Chalk Making Machine SpecificationHNYL 800-1:Beating with manpower ... 350(mm) 1case. Total weight:50 kgHNYL 800-2 Automatic beating and water supply,Product line, 1 operator, 120000 ... box Total weight: 300kg, 1.6 CBMHNYL 800-4 Automatic beating and water supply,Product line, 1 operator, 230000 ...