Polymer qhob sump yog qhov dej uas tau them nrog cov blocks ntawm lub sijhawm thaum faus cov kav dej hauv av lossis thaum tig. Nws yog ib qho yooj yim rau kev soj ntsuam cov kav dej ib txwm thiab dredging. Resin qhob sau zoo yog ib feem tseem ceeb ntawm cov kua dej. Nws tsis tsuas yog ua haujlwm rau kev ua kom cov dej ntws tawm, khaws cov khib nyiab, thiab tiv thaiv kev ua haujlwm ntawm cov kav dej, tab sis kuj tseem tuaj yeem siv los ua kev tshuaj xyuas zoo los ua lub luag haujlwm tseem ceeb hauv kev saib xyuas cov dej ntws. Cov dej sau tiav lawm muaj cov yam ntxwv ntawm qhov loj me, lub teeb yuag thiab lub zog siab, uas ua rau lub sijhawm ua haujlwm luv luv thiab yog ib qho tseem ceeb ntawm cov kav dej hauv kev tsim kho ntawm qhov project.