United States: Tektronix, Fluke, Agilent, Raytheon, Isco, TSI, Devisco, GE, Megger /AVO, ACL, Orion, Geely.
Japan: HIOKI, Kaya Hioki, YOKOGAWA, KIKUSUI, kyoritsu, Kaise, Sanhe AND SANWA, Iwasaki, Universal MULTI, TOPCON, and, RION, GRAPHTEC, COSMOS and ONOSOKKI.
Europe: Sweden Swema, Germany EPK, Germany Doelger, Britain Reddy, Germany KK, Italy HT, Britain Druck, France CA, Germany BEHA, Germany Detu testo, sartorius (Dolis), Germany WTW, Germany Hills CS, Britain MICHELL, mettler toledo, Sweden Bogama, Germany GMC.
Taiwan Province Province: Taishi TES in Taiwan Province Province, Hengxin AZ in Taiwan Province Province, Qunte in Taiwan Province Province, Gu Wei in Taiwan Province Province, Luchang in Taiwan Province Province, Xianchi in Taiwan Province Province, Yihe in Taiwan Province, Modimot in Taiwan and Ruiya Electronics.
Hong Kong: CEM Hong Kong, Yima Hong Kong, Uniqlo Hong Kong.
Others: Korea Xingcang Protek
B. Domestic brands: Nanjing Changsheng, Nanjing Minsheng, Nanjing Aidex, Qingdao Ainuo, Changzhou Yangzi, Changzhou Amber, Changzhou Tonghui, Yangzhong Ketai, Shengli, Huayi, Shanyang, Times, feaster Ke and Beijing EST.