CDL does not solely provide design and analysis service, but also supply the noise and vibration control materials. We establish close relationship with manufactures and setup a number of OEM production lines in Mainland. We have an experienced quality control team to inspect the whole production process. We modify any process in time, to comply the product specifications. To suit your need, we keep close contact with an analytical laboratory to identify appropriate materials upon request. We also carry out checking for the real use of specified production unit. After the inspection, we explain the production process in every detail to ensure you are clear about the manufacturing process of your product.