Exa E & C 

EXA E&C Inc. manufactures and sells specialized construction and electronic components in South Korea. The company offers clean room products comprising industrial and bio clean rooms; interior finishing of walls, floors, ceilings, and stairs according to the module, light weight, and earthquake-resistant structure of the building; interior design services; and partition products. It also engages in the manufacture of crystal units and oscillators, TCXO and VCXO products, monitor crystal, and IC products for use in the communication industry. The company was formerly known as Yaelim International Corp. and changed its name to EXA E&C Inc. in October 2004. EXA E&C Inc. was founded in 1988 and is headquartered in Seoul, South Korea.