Diving service ability in credit evaluation level II Certificate
- Last:ISU international Salvage Union
- Next:Certificate of occupational health and safety management system
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Preparation before underwater fi [2022-05-16]
Underwater fishing is dangerous, so it is very necessary to make preparations in advance. Before underwater fishing, please use lifting tools to prepare in advance. Next, follow Xiaobian to understand
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Environmental requirements for u [2022-05-16]
Underwater cutting is another underwater project. With the rapid development of economy, underwater cutting is more and more widely used. What are the environmental requirements of underwater cutting?
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What is channel dredging? [2022-05-16]
Dredging is an underwater earthwork excavation project that uses manpower or machinery to dredge, expand or excavate deep rivers, lakes and other waters. For a long time, channel dredging has been an