Prevent to the electrical shock
High Efficiency lighting
Earthling system & lighting protection
Whole Home Surge Protection
Divided Between main panel & sub panel
Physical check to existing electrical consumption and capacity

Braker Rating Calculation and Cable sizes
Fire Alarm
Wiring Upgrade
BackUp Power
Using Electrical Devices Inspection (Switches, loose connection, Outlets, Isolator and other Electrical Equipment Fluorescent, Downlight and others)