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![[Format conversion] Original logo.png](https://static.wixstatic.com/media/4cf1ba_7ddebeee64f04737b6fc1b2eac461cf4~mv2.png/v1/fill/w_158,h_48,al_c,q_85,usm_0.66_1.00_0.01,enc_avif,quality_auto/%5B%ED%8F%AC%EB%A7%B7%EB%B3%80%ED%99%98%5D%EB%A1%9C%EA%B3%A0%EC%9B%90%EB%B3%B8.png){kind=small}
Company introduction
Certification
Business Registration
Venture business confirmation
Certification of dedicated research and development department
Factory registration certificate
Development of expansion joint device
Certificate of Excellent Technology Evaluation Company
Certificate of Excellent Technology Evaluation Company
ISO9001:2015
ISO9001:2015_E
Small Business Technology Market Certificate
(rail joint)
(rail joint)
Small Business Technology Market Certificate
(finger joint)
(finger joint)
Patent
Patent certificate for variable amount of expansion and contraction type expansion joint
Patent certificate for bridge expansion joint with improved watertightness
Tapered core anchor socket design registration
Tapered core anchor socket patent registration
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