171 Hakdong-ro, Gangnam-gu. Seoul, Seoul, 06046. Republic Of Korea. See other locations. Phone. +82-234983200. Company Description. SPECO LTD. is located in Seoul, Seoul, Republic Of Korea and is part of the Construction Machinery Manufacturing Industry. SPECO LTD. has 69 employees at this location and generates $70.58 million in sales (USD).