Check if the drill and the battery can be connected normally. After the connection, the drill runs normally.
检查电钻与电池能否正常连接，连接后电钻运行正常

Make sure the on&off switch has the speed adjustion function.Press the switch deeper,The speed will be faster. Release the trigger and  the tool stopped immediately.
检查启动开关是否有速度调节功能，按更紧速度是否更快，松开开关，工具是否能即刻停止转动。

Plug in the battery,  make sure when press the direction switch left and pull the trigger, the drill is running in clockwise. At least try 3 times
插上电池，当将方向开关往左推并按下开关，电钻是否按顺时针转动，当将方向开关往右推并按下开关，电钻是否按逆时针转动。至少试3次

Plug in the battery,switch the top trigger from “fast speed” to “low speed” 3 times and make sure the tool has two speed.
插上电池，将电钻顶部的速度开关从“快速档”推到“低速档”并连推3次，工具是否有两种速度，即高速和低速。

check whether the LED light works or not
LED是否亮

 Turn the torque adjustment ring to check whether the torque adjustment ring can rotate normally. Press the switch and gently hold the chuck to feel whether the torque of the rotation changes with the adjustment value.转动力矩调节环，检查力矩调节环能否正常转动，按下开关，轻握夹头，感受转动的力矩是否随调节数值的变化而变化

 Make sure that there is no mechanical noise during turning；
确保转动时无机械噪音；

Look over all of the drill and battery and search for any scratches, marks, paint or silicon. Any visual defects should disqualify the product.
查看整个电钻和电池，并查看是否有明显划痕，油漆,胶圈外露,螺丝松动。 任何视觉上的缺陷都不应该出货。

Finally, check whether packed with all the neccessary accessories
最后检查所有的配件是否有遗漏

Check the charger and plug whether worked normally.
检测充电器和插头是否正常工作