Westech Systems, Inc. Return to Fresno Area Businesses Directory Westech Systems, Inc. Claim Listing Return to Fresno Area Businesses Directory Description Details Address 827 Jefferson Ave. City Clovis State California ZIP Code 93612 Phone 559-455-1720 Listing Category Electricians - Listings Please login to claim this listing. Username*: Email*: Password*: Log in | Lost your password?