STS Lining OO water purification plant in Sangju, Gyeongsangbuk-do 본문 OO water purification plant in Sangju, Gyeongsangbuk-do List PrevOO Bae Su-ji, Gyeongsan-si, Gyeongsangbuk-do 15.07.09 NextOO Bae Su-ji, Mungyeong-si, Gyeongsangbuk-do 15.01.09