Guangzhou Casen Door CO.,LTD attaches great importance to the raw materials of soundproof door-living room doors. Apart from choosing low-cost materials, we take the properties of material into consideration. All the raw materials sourced by our professionals are of the strongest properties. They are sampled and examined to ensure they comply with our high standards.. 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.. In order to deliver satisfactory service at Casen wooden door, we have employees who really listen to what our customers have to say and we maintain a dialogue with our customers and take note of their needs. We also work with customer surveys, taking into consideration the feedback we receive..