extruded aluminum structural-aluminum door frame profile is a good example of efficient production of Zeyi Aluminum Co., Ltd.. We select superior raw materials in a short time which only come from qualified and certified suppliers. Meanwhile, we strictly and quickly conduct testing in every phase without compromising the quality, ensuring that the product will meet the exact requirements.. In recent years, Zeyi has gradually received a good reputation in the international market. This benefits from our continuous efforts on brand awareness. We have sponsored or participated in some of China local events to expand our brand visibility. And we post regularly on social media platform to effectively execute on our brand strategy of the global market.. We can all agree that no one likes to get a response from an automated email, therefore, we have built a reliable customer support team which can be contacted via [网址名称] to respond and solve customers' problem on a 24 hours basis and in a timely and effective manner. We provide them regular training to enrich their know-how of products and improve their communication skills. We also offer them a good working condition to keep them always motivated and passionate..