3. There need to be a detailed assistance on cleaning and preparation to make certain hygiene, food stuff safety and suitable nutrition well suited for well being problems from the end users.1. Th?c ph?m ch?c n?ng nh?p kh?u và s?n xu?t trong n??c ?ã có quy chu?n k? thu?t ph?i ???c công b? h?p quy và ??ng ký b?n công b? h?p quy t?i B? Y t? (C