... 4.Used for plastic,rubber,chemical,papermaking etc. Limestone Powder and lump for PVC Application: 200mesh: as the additive in ... material 350-400mesh:gusset plate,chemical,pipe 400-600mesh:toothpaste and soap 800mesh:rubber,pvc,plastic,electric cable 1250mesh:pvc, ... .It is adopted the technics of particular multi-selection and secondary depolymerization.2.feature:poison free,odour free,high purity,high ...