Shenzhen Hongfa Automatic Door Co, Ltd. attaches great importance to the raw materials of industrial overhead door-high speed spiral door. 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.. With the rapid globalization, delivering a competitive Hongfa brand is essential. We are going global through maintaining brand consistency and enhancing our image. For example, we have established a positive brand reputation management system including search engine optimization, website marketing, and social media marketing.. 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 Hongfa Automatic Door. The test is based on our internal system which proves to be high efficiency in the improvement of service level..