Generaluse:Filtermeshforgasandliquidserveswellinfilteringanddeletingtheparticlemixtureinfoam,liquidandair,bywayofdistillatingabsorbing,evaporatingandfilterprocess,inpetroleum,chemicalsmetallurg,machineandsoon.Note:Specialrequipmentissubjecttotheagreementoftheparties.)