Qingdao Guolin ceramic New Material Technology Co., Ltd (hereinafter referred to as "the Company") Cheng Liyu in January 2023, is a domestic technical enterprise specializing in the research and development of precision ceramics and the production of precision ceramic device products.

The company is a subsidiary of Qingdao Guolin Science and Technology Group Co., Ltd. (hereinafter referred to as "Guolin science and technology" stock code: 300786). The company is committed to developing and improving precision ceramic products, and its main products include piezoelectric vibration plate, tire balancer, high-pressure fuse, atomizing plate, pickup vibrator and so on, which are widely used in the industry of automatic material selection, transmission and auto protection sensor.