BY Controls, Inc. was established in 1978 and has been supplying marine equipment over 40 years.

We have been supplying our products to most Korean shipyards such as HHI, DSME, SHI and middle size shipyards, and we are recognized for high quality and specialized technical skills. And we are also expanding our market by competing with global companies not only in the Korean market but also in overseas market such as China, Singapore and Russia.

BY Controls developed manual hydraulic valve remote operating unit in1982 that had depended on import from overseas market.

We supplied control valve through technical partnership with global companies and finally succeeded in localization of pneumatic control valve in 1996. In 1998, BY developed Electro-Pneumatic Controller and was able to supply pneumatic control valves as completely domestic (Korean) products. In the same year, BY developed Watertight Sliding Door used in offshore project such as Drillship, Semi-Submersible Rig. And through the development of the VRCS (Valve Remote Control System) in 2002,

BY has been recognized as the best company in Korea in pneumatic and hydraulic system field.