"Truth will help you out and you can do anything if you go straight" WONIL Industry is a medium-sized enterprise with more than 100 employees who manufacture and sell valves with a history of 30 years. WONIL produces water supply and drainage valves, fire-fighting valves, joints and water hammer arrestor for pipes and distribute them domestically and internationally. We have KS, KC anf KFI certifications for our own 85 products and there are few companies with as many certifications as us in Korea. We are doing our best to research and develop for accquiring further certification.