HD is a high-tech company specializing in the research, development, production, sales, and technical support of piezoelectric quartz crystal resonators and quartz crystal oscillators. Our brand was officially registered in December 2013, and our manufacturing center is located in Lingang New City, Jiangyin City, Jiangsu Province. With an initial investment of 30 million RMB, our main products include HC-49S, HC-49S/SMD, M49S, M49S/SMD, SMD7050, SMD6035, SMD5032, SMD3225, SMD2520, SMD2016, SMD1612, and oscillators (OSCILLATOR, VCXO, TCXO), among others. These products find applications in mobile phones, tablets, satellite communications, automotive systems, global positioning systems, personal computers, wireless communications, and household products. Their main functions include generating, transmitting, and filtering basic frequency signals. Our products are distributed in China, Japan, Singapore, the United States, Europe, and other parts of the world, serving various electronic industries worldwide.