Interfab Electronics [I] Pvt. Ltd. Manufactures Embedded System Design Circuit Boards. Interfab Electronics [I] Pvt. Ltd. Is an ISO 9001:2000 certified company that supplies Printed Circuit Board Assemblies, Hybrid Micro Circuits, Surface Mount Technology [SMT], PCB Assemblies, etc. The Embedded System Design Circuit Boards are used in Clean rooms and Machinery & Equipment for SMT.