Keep your legacy control systems up and running without unnecessary upgrades or costs – with AP4’s comprehensive repair services. GTC’s fast, dependable testing, refurbishing, and repair capabilities help extend the life of your industrial controls.




OR CALL +1-914-693-0830


Highly Responsive. Deeply Experienced. Widely Trusted.
OR CALL USA & CANADA:
+1-844-641-1367; 
INTERNATIONAL: 
+1-914-826-8641