China National Machinery Industry Corporation Changlin Co., Ltd. is a subsidiary of China National Machinery Industry Corporation, a large state-owned enterprise. It was founded in 1961 and was formerly known as Changzhou Forestry Machinery Factory of the Ministry of Forestry and Changlin Co., Ltd. The company is a national large-scale enterprise, a national high-tech enterprise, a national quality and efficiency advanced enterprise, one of the first batch of national manufacturing informationization engineering demonstration enterprises, and a demonstration enterprise for the integration of industrialization and informatization in Jiangsu Province; Having a national level enterprise technology center and a postdoctoral research workstation designated by the Ministry of Human Resources and Social Security; We have been the first in the industry to obtain certifications for ISO9001 quality management system, ISO14001 environmental management system, and ISO45001 occupational health and safety management system. In 2012, we successfully established a standardized enterprise for safety production.