Drawing lessons from foreign advanced technology, the company has made important scientific research achievements through independent research and development. At present, it has 4 invention patents and 8 utility model patents. In February, 2016, the estimated value of our company's intangible assets was estimated at 100 million yuan by the evaluation center of Zhongguancun Giant Value-added Science and Technology Evaluation Institute, and a detailed standardized evaluation report of scientific and technological achievements was made. It was also estimated that our aerospace filling wax products have reached the international first-class standard. In July, 2019, Qingdao Zhongtian Zhicheng Technology Service Platform Co., Ltd. assessed the estimated value of our company's "know-how" project assets at 300 million yuan, and made a detailed evaluation report on intellectual property rights-"know-how" project. It was also assessed that the technical maturity of our company's precision casting model wax products was grade 13, the technical innovation degree was grade 3, and the technical advanced degree was grade 6. It is suggested that the overall level of this achievement should reach the international advanced level.