Since 2011, Hangzhou Yokohama Tire has cooperated with Hangzhou City's environmental protection policy, investing more than 20 million Renminbi in environment-friendly facilities, including the introduction of deodorizing and dust emission purification equipment to the mixing and vulcanization process lines at the tire manufacturing plant and the construction of on-site sewage treatment facilities. On World Environment Day 2014 (June 5), Hangzhou Yokohama Tire held an external event to promote environmental protection, with the specific theme of "Protecting the cleanliness of our rivers". Meanwhile, inside the company, they started a "recycle water" project to promote reduced use of water at the plant's production lines and at employees' homes. The project has succeeded in reducing water usage by 10,000 tons during 2014. In addition, Hangzhou Yokohama Tire is educating local residents and students about the environment.