Flying inspection: a surprise inspection of the process quality control of material suppliers, the safety quality management of construction/testing contractors, the performance of service providers, and the inspection of various special works during the construction process (tunnel construction, river crossing, water network construction, underground work, pipeline burial depth, anti-corrosion repair, hydraulic protection, etc.).

Supplier evaluation: conduct a capacity evaluation of the material suppliers of the products purchased by the owner; conduct on-site inspection and assessment of the quality control situation of the material suppliers and the physical quality of the products.

Product approval: Confirmation of manufacturing and service capabilities, divided into factory approval, type approval, design approval, process approval, and equipment approval. Through the review of documents/drawings, quality management system review, product type test/process verification/facility and equipment capability verification, confirm that it has the production conditions and production capacity to continuously produce the corresponding qualified products, and the facilities/equipment have the corresponding service capacity or can provide the process implementation that meets the corresponding requirements.

Quantitative risk analysis (QRA): Identify potential risks, analyze the probability of potential risks occurring and the possible consequences, and provide protective suggestions for high-risk areas.

Welding technology service types: welding process evaluation; welding process evaluation witness supervision; welder on-site examination; weld inspection.

Non-destructive testing service types: RT (DR) / AUT / PAUT non-destructive testing results verification; fourth-party non-destructive testing supervision; X-ray film digitization; digital film intelligent verification.