I-valve yesalathiso esando sokutyumza yinxalenye echanekileyo.Okwangoku, kukho abavelisi abambalwa abanokuvelisa e-China, ngoko ke ixabiso alikho phantsi.
Kukho iintlobo ezininzi zemathiriyeli yokubuyisela umva ivalve yehamile etyumzayo.Xa ukhetha, abathengi kufuneka baqale babuze ukuba yeyiphi imathiriyeli eyenziweyo, kuba le yinxalenye echanekileyo, kwaye iimveliso ezineziphene zinokwenza i-hammer scrap yonke, ngoko sifuna ukuthenga iimveliso ezikumgangatho ophezulu.