2. Shengli Weite (a high-tech enterprise specializing in R&D and production of digital instruments, a new star in the electronic instrument industry, Shenzhen Shengli High Electronic Technology Co., Ltd.)
3.UNI-T( 1988, UNI-T Technology (China) Co., Ltd., one of the largest instrument companies in Asia, a leading brand in the test instrument market, a high-tech enterprise).
4. Xinling CLIN (China famous trademark, influential brand, national high-tech enterprise with first-class scientific research and development ability and diversified development, Xinling Electric Appliance Co., Ltd.)
5. Huayi Technology (Guangdong famous brand product, high-tech enterprise, main supplier of electronic measuring tools, main drafting unit of national standards for instruments, Dongguan Huayi Instrument Technology Co., Ltd.)
6.HIOKI Kaya Hioki (founded in 1935, a famous Japanese brand, Kaya Hioki (Shanghai) Trading Co., Ltd., which has an international important position in the research and development and manufacturing of advanced test and measurement technology).
7. Agilent Agilent (one of the largest test and measurement companies in the world, a diversified high-tech multinational company, formerly HP Test and Measurement Department, Agilent Technology (China) Co., Ltd.)
8. Antaixin ATTEN (one of the most powerful electronic instrument manufacturers in China, a high-tech enterprise, a well-known brand in Shenzhen, Shenzhen Antaixin Electronics Co., Ltd.)
9. Baogong Pro'skit (a famous professional manufacturer in Taiwan Province Province, tel: 199 1, devoted to developing various tools and testing instruments and selling them all over the world, Shanghai Baogong Tools Co., Ltd.).
10, Rey (founded in 1996, a municipal advanced enterprise, whose brand products are exported to the Middle East, Europe and America, and a professional instrument series manufacturer, Ruida Instrument Co., Ltd.)