Guangzhou Casen Door CO.,LTD places great importance on raw materials used in the manufacturing of mdf doors-composite door suppliers. Each batch of raw materials is selected by our experienced team. When raw materials arrive at our factory, we take good care of processing them. We totally eliminate defective materials from our inspections.. 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.. We pride ourselves with outstanding services that make our relationship with customers as easy as possible. We are constantly putting our services, equipment, and people to the test in order to better serve customers at Casen wooden door. The test is based on our internal system which proves to be high efficiency in the improvement of service level..