jonyang@jonyang.com +86-15308526758、+86-13078521618 +86-18785138377、+86-15185117573
Zonke izithuthi zomhlaba ezilandelwayo kwizithuthi ze-polar zihambisa ukuhamba okuthembekileyo kwimimandla ebandayo, ebonisa ubume obuqinisiweyo, Iinkqubo ezihamba phambili zokuhamba, kunye nokuqina ukuqina kwemisebenzi yezenzululwazi kunye nezobugcisa.