Mainly Designed For Lake & Sea. Be Able To Be Used For Harvest. Resist Maximum to 6M Wave. Still Very Strong And Working Well During Typhoon. Having Good Feedback From The Biggest Tilapia Farm In The World And Other Governmental Projects. Function:  Marine cage farming system can be used in various water environments including lake, sea and river...etc. Suitable for intensive farming. Suitable for different species, such as Tilapia, Japanese Sea Bream, Goldlined Sea Bream, Cobia, Greater Amberjack, Blue-Banded Sea Perch, Spangled Emperor (Sand Snapper, Parrot-Fish), Snappers, Yellow-Wax Pampano, Orange-Spotted Grouper, Red Drum, Catfish, Striped bass, Bluegill sunfish, Crappie, Carp… etc. Characteristic "One-Piece Injection Molded" HDPE 80 Bracket, extremely sturdy. HDPE 80 Floating Pipe and HDPE 100 Handrail Pipe offer excellent ESCR (Environmental Stress Cracking Resistance) and resist deformation. High carbon component, strong UV resistance ensures sound durability, low maintenance and investment cost. Removable Handrail T Bar makes more easily assembling, simplified harvesting & efficient maintenance as well as resistant to corrosion. Heavy duty standing pole. Bear heavier net weight. All the "Round" and "Square" shape cages can be tailor-made.