main advantages of wireless remote control grab: 1. The cranes do not need any additional accessories, hang the grab to the crane hook (or shackle connection) directly then can operate the grabs. 2. Belong to the eco-friendly grab ,just need a battery, by mechanical and hydraulic systems work together, then can complete the loading and unloading of cargo; 3. Grab structure is simple, hydraulic and electric control system components is relatively less, and less trouble, even trouble is easy to repair, and maintenance cost is less; 4. Grab can be easily controlled within 100 meters from the grab center; Shanghai Bangding Machinery Equipment Co.,Ltd.