Our company is a professional underwater engineering firm with branch offices in all provinces across the country. We possess independent corporate status and have a registered capital of 5 million yuan. We have 7 construction teams, 40 professional divers, 18 technical personnel, and a total of 138 staff members. Equipped with excellent technical equipment, we lay a solid foundation for delivering outstanding projects. With our exceptional divers, professional technical equipment, superior service quality, quick response times, and enthusiastic service attitude, we are established nationwide, providing top-notch underwater construction services to all clients across the country.

Our business scope includes:

(1) Underwater welding, underwater cutting, underwater cinematography, underwater photography, underwater flaw detection, underwater excavation and sealing, underwater dredging, underwater inspections, underwater demolition, underwater sealing, underwater recovery, underwater installation, and maintenance, etc.

(2): Underwater video recording, probing, underwater obstacle removal, dam painting, underwater gate welding, cutting, installation, and maintenance for buildings such as power stations, dams, reservoirs, etc.

(3): Subsea pipeline and underwater optical cable laying construction

(4): Submerged shipwreck recovery and underwater object recovery operations.

(5): Underwater sediment removal, riverbed sediment removal, pond sediment removal, sedimentation tank sediment removal, biological pond sediment removal, wastewater pipeline sediment removal, drainage pipeline cleaning, reservoir gate sediment removal, wastewater pond sediment removal, sediment well sediment removal;

(6): Sewer pipeline, drainage pipeline, underwater pipeline inspection, underwater pipeline detection, underwater pipeline surveying and evidence filming. Underwater pipeline installation and laying, water intake pipeline installation, river-crossing pipeline installation and fabrication, immersed pipeline fabrication, laying, and installation.

(7): Caisson construction, caisson manufacturing, caisson sinking, caisson sealing and sediment removal.

(8): Water treatment and power plant pond/ditch dredging, pump house cleaning, underwater pipeline laying, underwater trash rack cleaning, trash rack inspection, gate replacement and lifting, diversion tunnel, reservoir dam leakage sealing and reinforcement, etc. maintenance construction;

(9): Underwater steel structure and component installation, welding, and construction: Underwater anode welding protection, utilizing underwater wet welding, underwater dry welding, underwater gas shielded welding, underwater electro-oxygen cutting, and other methods for underwater installation and removal operations of underwater vessels, platforms, submarine pipelines, and underwater steel structures.

(10): Underwater Concrete Repair and Casting Construction: Specializes in the construction of various reinforced concrete structures underwater in marine, lake, inland river, reservoir, and other aquatic environments. Utilizes innovative underwater materials, equipment, and techniques for direct underwater construction. Features short construction period, high reliability, and low comprehensive cost.

(11): Underwater Crack and Leak Treatment: Perform underwater sealing treatment for cracks and structural joints in hydraulic power system reservoir dams. The treatment methods are divided into two main categories based on the cause: rigid and flexible.

(12): Underwater Reinforcement and Strengthening: Provides underwater treatment, repair, reinforcement, and strengthening services for defects in underwater steel or concrete structures of hydraulic power system reservoirs, dams, as well as coastal inland river ports and docks.