Recently, Nanjing Changjiang Coatings Co., Ltd. was rated as an advanced unit in Nanjing Chemical Industry Park for safety and environmental protection. Each year, the company has introduced new safety and environmental protection facilities, increased the development and production of water-based wood-based paints and other environment-friendly products, updated the grinding equipment to be closed, changed the storage of large barrels, and transported raw materials for pipeline transportation. These measures have enabled employees to work on site. The operational environment has been greatly improved, the volatilization of harmful gases has been reduced, and the consumption has also been reduced; the company has organized practical exercises such as fire-fighting and escape training every year. The company has also passed the acceptance of national security standardization secondary companies, clean production audit, environmental management system and occupational health and safety management system certification. A Bolt is a type of fastener consisting of a head and a Screw (a cylindrical body with external threads), which needs to be used in conjunction with a nut to tighten and connect two parts with through holes, Hexagon Bolt,Hexagon Head Screw,Hexagon Screw,Hexagon Head Bolt AM FASTENER , https://www.asmefastener.com