Kuoma kwegirazi kwakakwira zvakanyanya, kana kushandiswa kusiri nyore kukwenya nekukwenya iyo general sodium calcium glass vickers hardness (HV) iri 400 ~ 480MPa, uye kuoma kwepurasitiki kwakaderera, kuri nyore kukwenya, senge polyvinyl chloride. (PVC) HV i10~15MPa, thermosetting polyester (PET) i10~21MPa, polyethylene (PE) iri 5~8MPa, polypropylene (PP) i6~11MPa.
Nguva yekutumira: Jan-10-2020