50,000l2mh3,020x7,4408t.dwg [File size:323KB]
50,000l2mh3,020x7,4408t.pdf [File size:190KB]
아일랜드(단식,복식,단단식,단복식,복복식)
강제 이중벽탱크(SST) 40,000L - 맨홀2개