Kuti tipeze malonda abwino kwa kasitomala athu, timayendetsa kayendedwe kabwino katatu pamitengo yonse yama stock ndi omwe siosowa.
1. PQC: Njira Yoyang'anira Makulidwe panthawi yopanga
2. IQC: Kulowa Quality Control pambuyo kupanga
3. OQC: Kutuluka Kwabwino Kwambiri musanatsegule