DongjooAP started to produce industrial valves in 1995. It developed the balloon seat type valve applied to the powder process for the first time in the nation, the semiconductor ball valve for vacuum, the double disk valve applied to the poly-silicon process, and the high precision flow control valve, all of which has helped us maintain our "Position No. 1".

DongjooAP will become an even strong partner to achieve great accomplishments and higher value.

We sincerely promise to improve our in-house system in a creative and rational manner, in order to focus on achieving the best quality, and to continue to do our best for our customers with the goal of fully satisfying customers through the delivery of the best products and services based on continuous technology development so that innovation is enhanced.