Guangdong Changying Precision is a high -growth shareholding company specializing in the development, production, and operation of products such as mobile communication terminals, digital and photoelectric products, micro -connectors, mobile sliding rails, and mobile phone metal frames. (Stock code: 300115), there are 29,000 employees, and their main customers are: Samsung, Huawei, ZTE, Lenovo, Xiaomi, Coolpad, OPPO, vivo and other well -known domestic and foreign companies.

Located in Dongguan Songshan Lake National High -tech Park, it is the first large -scale machinery (person) replacement company in Dongguan Media.

The company has a large number of CNCs, large output, dense machines, many personnel, heat, heat dissipation, various thermal stacks of heat, with large span in the workshop, poor indoor air circulation, and due to the necessary production process, there are a large number of oil products for machine oil products. Volatility is pervaded in the air, and employees have complained, and management has been looking for a proper improvement plan. In 2014, the company handed over the task of transforming the air environment to the company. On the day of the project completion test aircraft, the staff and managers of the workshop experienced a comfortable and cool workshop environment. It turned out that the sultry and oil smell of the workshop improved significantly. Other departments and workshop managers also experience inspections. For more than two years, the company has made three transformations in different workshops, and has received unanimous praise from front -line employees and senior managers from beginning to end.