quality management system certification

At present, many consumers come to our company for inspection and consultation on the underwater rescue price of our technicians. What is the price measurement standard? Why are some prices very low a

(1) Investigate the landscape image, water depth, water temperature, flow rate and other environment of the operation area. It can be operated only when the wind force on the water surface is less tha

Sunken ship salvage in underwater salvage: six different methods can be adopted according to the size of sunken ship and the specific location of the event. However, various methods can be used alone,