Shandong Zhiheng Vibration Damping Technology Co., Ltd., founded in 1978, is a listed company on the New Third Board (stock code: 832027). It is the core supplier of vibration reduction products for high-speed EMUs in China, subway track vibration reduction products, construction machinery insulation products. The main supplier of vibration products, the global supplier of Bombardier (Alstom), is a small giant enterprise of "specialized, refined and new", a high-tech enterprise in Shandong Province, and the spring engineering laboratory of EMU has been recognized as a "provincial engineering laboratory". ”, has a number of patented technologies for rail transit vibration reduction equi……