Jiangsu Baizhou Safety Technology Co., Ltd. [1] is a modern enterprise integrating science and technology, design, manufacturing, sales and service. Specializing in the research, manufacturing and sales of firefighter equipment, rescue equipment and ship life-saving fire-fighting equipment, and acting as an agent for the sales of advanced imported personal protection and special equipment. The products produced by the company mainly include self-contained positive pressure respirator, marine firefighter equipment, marine respirator, fire insulation clothing, emergency escape breathing device, commander type air respirator, self-priming long tube respirator, air supply positive pressure long tube respirator, constant flow positive pressure long tube respirator, series of high-pressure mobile air supply sources, compressed air safety inflation table, etc. In order to maintain and improve the products in the hands of users in time to maintain a good working state, the company has specially established a skilled special after-sales service department composed of many technical engineers, which can effectively meet the after-sales needs of customers.