敬启者: 我司求购磁性扫描机供出口(附入照片),详细产品要求请见如下:(以英文版为准) mechanical pushbutton for marking of exactly measured magnetic centre point. 按下机械按钮，能够自动准确的找到磁铁在哪一个中心位置 2. bigger display with strong background light. 要有较大的屏幕显示和带有比较亮的背光源 3. dimension of instrument can be up to 50% smaller the 1st. version. 制造出的仪器大小好能比排名靠前代版本的小一倍。 4. integrate functions with micro wave sensors etc. for detecting steel, copper and wood with high material density. 综合功能要有微波传感器来检测密度高的材料例如：铁，铜和木材。 5. function selector button for different material detectors. 针对不同的材料检测器功能选技按钮 6. automatic calibrating when magnetic fields change to opposite poles. 要自动的校对磁铁当磁场向相反的磁极变化。 7. integrated with rechargeable lithium lon battery or better, with external charger. 内部要有能够充电的锂离子电池，这样能够与外介充电。 8. exactly detecting point for distance up to 20cm. magnet field should be recognized in display in a diameter minimum 20 cm, with distance of 20cm from instrument. 能够准确的检测出20厘米范围的磁场。磁铁要被显示出来在一个直径小在20厘米。 9. automatic switch of power after 1 minute without use. 在没有用仪器超过一分钟，将会自动关闭电源。 10. pushbutton for background light. 要有控制背光的按钮 11. pushbutton for alarm. 要有设置闹钟的按钮 12. pushbutton for on and off. 要有开和关的按钮. 侯速复!谢谢合作!