Categories 1. Good Hygienic Practices 2. Preventing Contamination by Hands 3. Approved Sources 4. Protection from Contamination 5. Chemicals Operations A. All food is stored or prepared from approved sources 。 B. Chemicals are clearly labeled and stored away from food C. Hands are washed properly , frequently and at appropriate time 。 D. Eating , drinking and smoking are allowed only in designated areas 。 E. Food equipment and food contact surfaces are properly washed and sanitized before every use 。