Advanced Concrete Systems, Inc. located in Middleburg, Pennsylvania has manufactured and installed over 23,000 Superior Walls precast concrete foundation systems since 1986. Advanced Concrete Systems employs approximately 100 people in Snyder County and operates in Pennsylvania, Maryland, West Virginia, and Virginia. System-wide since 1985, Superior Walls of America, Ltd. licensees and franchisees have manufactured and installed over 95,000 Superior Walls precast concrete foundation systems.