Ubukomezi bwikirahure buri hejuru cyane, mugihe gukoresha bitari byoroshye gushushanya no gushushanya muri rusange sodium calcium ikirahure cya vickers (HV) ni 400 ~ 480MPa, kandi ubukana bwa plastike buri hasi cyane, byoroshye gushushanya, nka chloride polyvinyl .
Igihe cyo kohereza: Mutarama-10-2020