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ISO 9001:2015 Quality Management System Certificate
Certificate
Certification of Cheon-woo M-Lok
ISO 14001:2015 Environmental Management System Certificate
ISO 45001:2018 Occupational Health and Safety Management System Certificate
Design Registration No. 30-1101943 – Screw for Ball Valve
Design Registration No. 30-1264703 – Lever for Valve Operation
Design Registration No. 30-1279335 – Ball Valve Assembly
Trademark Registration No. 40-2286440 – CHEONWOO LOK Co., Ltd.
Patent No. 10-2659400 – Low-Pressure Relief Valve for Residual Gas Venting
Patent No. 10-2043946 – Piping Connector
Patent No. 10-2337676 – High-Pressure Ball Valve with Stopper External-Exposure Prevention
Patent No. 10-2600275 – Ball Valve with Key-Lock Function for Flow Control
Patent No. 10-2765746 – Plug Valve with Disc-Type Buffer for Collar Contraction and Expansion