In industrial manufacturing, the four main items that have a direct impact on product quality are usually design, incoming materials, process, and storage and transportation. Generally speaking, design accounts for 25%, incoming materials account for 50%, process accounts for 20%, and storage and transportation account for 1% to 5%. Incoming inspection plays an overwhelming role in the quality of the company's products, and electronic components occupy a significant portion of the incoming materials, with some components often being the core units of the product. Our independently developed LCR, micro ohmmeter, electronic load, power supply, signal source, voltage tester and other instruments provide high-quality, high safety, high reliability, and cost-effective comprehensive solutions for component testing.