The following brands of spirit levels are better: 1. Blackamp; Decker (founded in the United States in 1910, a world-famous tool brand, one of the world's largest power tool manufacturers, a large multinational company, and the American Stanley Blackamp Company) ? 2 Bosch BOSCH (founded in Germany in 1886, a world brand, the world's leading manufacturer of power tools, an influential brand in the industry, Bosch Power Tools (China) Co., Ltd.) ? 3 Leica (originated in Switzerland, affiliated to Swedish Hexagon Group, the world's leading supplier of measurement products, industry-leading brand, Leica Measurement Systems (Shanghai) Co., Ltd.)? 4 Suzhou Yiguang (founded in 1958, a famous trademark in Jiangsu Province, a famous brand in Jiangsu Province, a national high-tech enterprise, surveying and mapping Industry-leading brand, Suzhou Yiguang Instrument Co., Ltd.)? 5 SIMCT (founded in 1958, the country's first manufacturer of electronic digital measuring tools, national standard drafting unit, Shanghai Measuring Tools and Cutting Tools Factory Co., Ltd.)? 6 Yuhang (Founded in 1969, affiliated to Aviation Industry Corporation of China, a national first-level measurement unit, a high-tech enterprise, Qingdao Qianshao Precision Machinery Co., Ltd.)? 7 Dongjing Eprect (a famous trademark in Zhejiang Province, a famous brand product in Zhejiang Province, and a domestic level measurement industry Leading enterprise, one of the largest spirit level manufacturers, Dongjing Group Co., Ltd.)? 8 Zhanzhan KINZO (National high-tech enterprise, a high-growth private enterprise specializing in R&D/production/sales of laser instruments, Jiangsu Zhanzhan Optoelectronic Instruments Co., Ltd.)? 9 FUKUDA (a Sino-foreign joint venture focusing on R&D/production/sales of laser engineering instruments, a high-tech enterprise in Jiangsu Province, Suzhou Futian Laser Precision Instrument Co., Ltd.)? 10 Laisai (the earliest domestic manufacturer of construction laser instruments and measurement One of the professional manufacturers of instruments, a high-tech enterprise, Changzhou Laisai Optoelectronics Technology Co., Ltd.)?