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In a dust test chamber, ThinkPads are subjected to large amount of dust particles.
The company's researchers make sure that even under dusty conditions, the CPU does not overheat and its capabilities are functioning at optimal levels.
In this pressure test, a robotic arm presses down on the keys of the keyboard to make sure they don't break or come off easily.
This test "bends" the monitor to make sure the screen does not crack under external pressures.