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Profitability: ROE is 16.77%, gross profit margin is 84.77%, and net interest rate is 51.10%.Highlights of the company: Best's main products include high-precision ball/roller screw pairs, high-precision rolling guide rail pairs and so on, which are used in industrial machine tools, humanoid robots and other fields.Main products: metal plastic polymer self-lubricating rolled bearings are the main source of income, accounting for 35.03% of the income and 49.33% of the gross profit margin.

3 rd Lei Sai IntelligentMain products: mechanical sensors and instrument series are the main sources of income, accounting for 61.88% of the income and 41.39% of the gross profit margin.Performance forecast: ROE fluctuates between 12% and 21% in the last three years, and the latest forecast average is 10.13%. Main products: MEMS gyroscope is the main source of income, accounting for 89.37% of revenue and 82.42% of gross profit margin.

Highlights of the company: Huichuan technology is still in the early stage of insight and pre-research on the layout of humanoid robot industry, and the parts and components under development include motors, drivers and actuator modules.3 rd Lei Sai IntelligentHighlights of the company: the main business of double-ring transmission is mechanical transmission gears and related parts, and its main application fields cover automobile powertrains and transmission devices including transmissions and transfer cases.