The needle roller bearings without flanges are separable, i. E. The outer ring, the needle roller and cage assembly and the inner ring can all be mounted separately.

不带法兰的滚针轴承是可分离的，即外圈、滚针和保持架组件以及内圈都可分别安装。

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The main products are Diamond Needle Files, Flat Files, Mounted Points, Wheels, Cutting Blades, Saw Blades, Mental Pen, Natural Diamond Wheel Blade, Diamond Grinding Paste etc.

主要产品有金刚石什锦锉，大扳锉，磨针，磨头，砂轮，切割片，锯片，金属笔，天然金刚石砂轮刀，研磨膏等。

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In concrete, this invention comprises a sensor unit having a holder and a blood sensor mounted to the holder and a needle unit having a slidable puncturing needle.

具体而言，本发明提供传感器组件，该传感器组件包括：传感器单元，其包含支架和安装在所述支架上的血液传感器；

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