1.rofessional umkhiqizi valve, oneminyaka engaphezu kwengu-20 nakho embonini.
2.Umthamo wokukhiqiza wanyanga zonke wamasethi ayisigidi, unika amandla ukulethwa okusheshayo
3.Ukuhlola i-valve ngayinye ngayinye
I-4.I-QC ejulile kanye nokulethwa ngesikhathi, ukwenza ikhwalithi ithembekile futhi izinzile
5.Ukuxhumana okusheshayo okuphendulayo, kusukela ekuthengisweni kwangaphambili kuya ekuthengisweni kwangemva kokuthengisa