2. Good grip speed HIOS (HIOS Co., Ltd., the top brand of electric screwdriver industry, dedicated to the research and development of electric tools/torque measuring instruments/screws)
3. Qilisu KILEWS (professional supplier of automatic screwdriver, famous brand of electric screwdriver, Taiwan-funded enterprise, Qilisu Power Tools (Shanghai) Co., Ltd.)
4. Black & Decker; Dacker (19 10, USA, a world-famous tool brand, one of the largest power tool manufacturers in the world, and a large multinational company, Stanley Black & Dacker).
5.Tech Friend CONOS (the first industrial electric screwdriver factory in Taiwan Province Province, an industry standard certification enterprise, a multi-technology patent certification authorized enterprise, Tech Friend (Nanjing) Technology Development Co., Ltd.).
6. Dawei DELVO (electric screwdriver professional tool manufacturer, global supplier, well-known brand in the industry, ISO 1400 1 certified enterprise, Ridong Gongju Co., Ltd.)
7.DEWALT (affiliated to Black & Decker Company, one of the largest manufacturers of electric tools, the world's leading tool manufacturer and famous brand, Stanley Black & Decker Company of the United States).
Makita Makita Makita (founded in 19 15, a large multinational enterprise, one of the largest manufacturers specializing in the production of professional electric tools in the world, Makita (China) Co., Ltd.).
9. Mattel Mattel (1924, Germany, one of Germany's famous professional power tools manufacturers, a large multinational enterprise and a world brand, Mattel Power Tools (China) Co., Ltd.).
10, Hitachi electric tools (19 10 was founded in Japan, a world-famous brand, one of the largest comprehensive multinational groups in the world, and a fortune 500 enterprise, Hitachi (China) Co., Ltd.).