What polymer materials are used, and what are their performance advantages over metal or blow-molded plastics?

Prime-grade LLDPE, HDPE, and UV-stabilized polyethylenes are primarily utilized. Seamless one-piece rotational molding eliminates stress points and weld lines, resulting in zero-leakage structures, high impact resistance, chemical corrosion immunity, and a 15+ year operational lifespan under severe marine and industrial outdoor environments.