Proof Load Testing Weight water Bags ,Instead of the traditional soliod tooling for the persons weight,Designing and Producing upon the new Marine Regulation,Used for the FRP Rescue boat and Liferaft Davit,Totally Enclosed Lifeboat And Rescue Boat Davit,A Frame Davit for Fast Rescue Boat,Gravity Arm Luffing Davit,Hydraulic Lifeboat Davit testing and So on,Our company could offer many type of water bags with 1MT, 2MT, 5MT, 10MT, 20MT, 25MT, 35MT, 40MT,50MT&100MT from BV approval with good quality and Price.