... in order to meet the demands of diving operations, salvage, fishing, aquaculture, sediments salvage underwater engineering, water parks, shipbuilding and ... it also reduces the starting load of the unit.The use of Cr Mo Cu alloy cast iron cylinder liners and ... defects in delivery and use 12 months. 15-30Mpa Scuba Diving Air Compressor for Diving Operations,Salvage,Fishing,Aquaculture,Sediments Salvage ...