- Handle Relationship
- Control Company's Regulation and Welfare
- Handle Safety
- Control Security Guard
- Control Personnel & Administration of YET-S
- Control Canteen Management
- Control Public Utility of Company
- Contact to Government Department Office
- Handle Safety & 5S System
- Handle ISO 14001 System
- Handle Training System Internal and External
- Handle Energy Saving Project
- Control Waste Management
- Handle Annual Health Check up for employees
- Handle Safety Activity reduce Zero Accident