Dongguan Huayi Instrument Technology Co., Ltd. was established in 1987. It is the world's largest instrument manufacturing enterprise, one of the main suppliers of electronic measuring tools worldwide, a well-known brand in China's testing instrument industry, a high-tech enterprise recognized by the Chinese government, and a famous brand product in Guangdong Province. It is also the main drafting unit for national standards in the electrical instrument industry. Technological innovation is the driving force behind the development of MASTECH. MASTECH Engineering Technology R&D Center is a well-known design institution in the industry. The company has gathered a large number of high-quality R&D talents and possesses first-class precision testing equipment. With years of accumulated professional design concepts, it strives to design novel, high-quality, safe, durable, and precise cost-effective technology products for global customers to meet their various needs. At the same time, its outstanding ability in technological innovation has enabled it to provide better ODM product design services for global customers. The modern, garden style, and large-scale production base with an annual production capacity of 3.5 million units of various instruments is an important guarantee for MASTECH to gain a competitive advantage. The company covers an area of over 20000 square meters and has a 15000 square meter central air conditioning system clean room. It has advanced automatic flow and flexible assembly and debugging production lines, as well as advanced SMT workshops, injection molding workshops, screen printing workshops, UL pen testing production workshops, mold design and processing centers, and well-equipped metrology and testing centers. The excellent production environment, first-class production facilities, and huge production capacity provide customers with stable product sources, ensuring that the company maintains its industry-leading advantages. The scientific and standardized management of enterprises and quality is the core of MASTECH's successful development. The company has a young, knowledgeable, and professional management team that has successfully implemented advanced ERP enterprise information management in the industry. It has fully integrated financial management, marketing, product research and development, production and manufacturing, logistics management, and after-sales service into the information management system to ensure efficient operation of the enterprise. The company has also established an ISO9001 international quality standard management system certified by the internationally authoritative certification body TUV Rheinland in Germany. From supplier screening, incoming material inspection to every aspect of production and manufacturing, it strictly adheres to the AQL international quality inspection standards. Satisfying customer needs is the company's eternal quality policy, strictly adhering to the PDCA cycle mode for continuous improvement, ensuring the provision of high-quality products to customers. The enrichment, improvement, and enhancement of the product chain are important means for MASTECH to win the market. MASTECH has successfully launched over 200 products covering multiple fields to the market, winning widespread praise from customers. On the basis of mass production of digital multimeters and clamp meters, the company actively develops and manufactures high-tech products such as power testing instruments, safety testing instruments, on-site testing instruments, analytical instruments, laboratory general instruments, environmental testing instruments, network cable testing instruments, and intelligent automotive testing instruments, achieving the ability to lead China and compete with international first-class enterprises. In terms of product development and manufacturing, we strictly adhere to the safety and environmental standards of the International Electrotechnical Commission. Our products have obtained CE certification from the European Union, and some products have also obtained UL certification from the United States and GS certification from Germany, laying a solid foundation for MASTECH's global business expansion. The global marketing network and comprehensive after-sales service system are the driving forces behind MASTECH's rapid development. After more than 20 years of unremitting efforts, MASTECH has established over 700 strategic partners worldwide, and its products are sold well in more than 100 countries and regions around the world. In China, the MASTECH brand has always held a leading position and is deeply trusted by customers