... , Anti-High temperature, high strength oiliness macromolecule nylon slide block.4. Require no less than 150mm cement on the ground ... testing , fulfill 4T/5T actual working conditions. 7. Chain and single point release device, make the security parameter up ... discrepancies at % stage & product consistency.POWER10. Double cylinder dynamic hoist drive device, capacity is more than 4T/5T.11. Aluminum ...