| LH Daewoo E & C | Hanam Misa 18 Block Daewoo Construction | Daejung ENC | SP Flexible Joint |
| LH Taepyeongyang Construction | Suwon Gwonseon-gu Seryu-dong Hanjin | Dongbang Electronics Industry | SP Flexible Joint |
| POSCO | Asan Lake City 2 cha, Chungnam | Daehan ENG | SP Flexible Joint |
| AMCO | Seojong-si Jongchon-dong AMCO Town | Jungwon Engineering | SP Flexible Joint |
| Shinhan Construction | Hwaseong City Dongtan-myeon Shinhan Construction, Gyeonggi | Uno Construction | SP Flexible Joint |
| Daewoo E & C | Hanam-si Mangwol-dong a30 block Daewoo E & C, Gyeonggi | Gwangjang EMC | SP Flexible Joint |
| Hyundai E&C | Namyangju-si Jigeun-dong Hyundai E & C | Daejung ENC | SP Flexible Joint |
| Hyundai E&C | Jinju LH Building | MKG | SP Flexible Joint |
| LH Umi Construction | Chungju-si Anrim-dong LH Corporation Umi Construction, Chungbuk | Daejung ENC | SP Flexible Joint |
| Jinheung Enterprise | Cheonan-si Chaam-dong-dong Jinheung Enterprise | Sungjee Engineering | SP Flexible Joint |
| LH Hyosung Construction | Wonju-si Banghak-dong LH Hyosung | Dongsan Tech | SP Flexible Joint |
| Daelim Construction | Seoul Gangnam-gu Nonhyun-dong | Dongsan Tech | SP Flexible Joint |
| Ssangyong Construction | Busan Gwangan-dong Ssangyong Construction | Namkyung Engineering | SP Flexible Joint |
| GS E & C | Mapo-gu Gongdeok Jai | Dongsan Tech | SP Flexible Joint |
| LH Hanhwa Construction | Daegu Buk-gu Daehyun-dong Hanhwa Construction | Dongsan Tech | SP Flexible Joint |
| LH Daebo Construction | Daegu Dalseong-gun Hyeongpung-myeon Jung-ri Daebo Construction | Dongsan Tech | SP Flexible Joint |
| KCC | Buk-gu, Pohang-si Pohang Yanghak Sweetchen, Gyeongbuk | Namkyung Engineering | SP Flexible Joint |
| Hyundai E&C | Namyangju-si Jigeun-dong Hyundai E & C | Daihyun ENG | SP Flexible Joint |
| Doosan E & C | Cheongju Gwell City 2 Block 2 Gonggu | Daihyun ENG | SP Flexible Joint |
| Hyosung Construction | Ulsan-si Jung-gu Boksam-dong Hyosung Herrington Art | Namkyung Engineering | SP Flexible Joint |