On the morning of September 8, 2021, king-join officially put its 10,000-ton carbon fiber production line in Xining into operation. A total of 5 billion yuan was invested in this project whose development was initiated in May, 2019. The technology and scale of this project are in a leading position in the country, manufacturing products with excellent quality and stable performance. king-join has devoted more than ten years in carbon fiber R&D and manufacturing, and now has independent control over the technologies involved in high-end carbon fiber production. We won the first prize of 2017 National Science and Technology Progress Award. Our products are widely used in aerospace, transportation, new energy, infrastructure and other fields.