1974. 04.20 : Established Sam-Jung Steel Industry -PC bridge cone, sheath duct, spiral, steel wire etc. 1986. 01. 01 Converted to Corporation wedge, bearing shoe 1990. 02. 02 Review of Wedge specification -Reliability and endurance test 05. Changed a firm name \\\'Sam-Jung strand cone\\\' ...
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Address:#670-5 Gojan-dong Namdong-gu Incheon Korea