Supplier Audit: Dongyu evaluates the supplier's quality management system to ensure that the supplier's ability meets the customer's requirements.

Product Inspection Service: Dongyu dispatches inspectors to conduct a full or random inspection of the product to confirm whether the product is consistent with the contract.

Engineering Supervision: Dongyu dispatches qualified QA/QC inspectors to the site to supervise all stages of production. Inspectors supervise the fabrication, inspection and testing of materials to ensure compliance with manufacturer and customer requirements.

Expediting service: Reminder includes office reminder, on-site visit reminder, resident supervision and delivery, etc., which can help customers manage the progress and assist the factory to deliver on time.

 Testing services: Dongyu has experienced non-destructive testing engineers who can provide quality services for various industries. Dongyu has a long-term cooperation with third-party certification laboratories that can provide testing services for different kinds of materials. Customer-specified products are tested according to local standards using advanced testing equipment and technology.