During the production of luxury doors-hdf doors, Guangzhou Casen Door CO.,LTD divides the quality control process into four inspection stages. 1. We check all incoming raw materials before usage. 2. We perform inspections during the manufacturing process and all manufacturing data are recorded for future reference. 3. We check the finished product according to the quality standards. 4. Our QC team will randomly check in the warehouse before shipment. . To expand our Casen brand, we conduct a systematic examination. We analyze what product categories are suitable for brand expansion and we make sure these products can offer specific solutions for customers' needs. We also research different cultural norms in the countries we plan to expand into because we learn that foreign customers' needs are probably different from those of domestic.. To ensure that we meet the production goals of customers, our highly skilled service-oriented professionals will be available to help learn the details of products provided at Casen wooden door. In addition to that, our dedicated service team will be sent for on-site technical support..