Features :high life, dustproof, waterproof, oilproof, not greasy heat resistance, corrosion resistance, high acid and alkali, it can use any object to touch, and can be used to write and to paint.

• 特点：寿命高，对外界完全隔离的工作环境，不怕灰尘、水汽和油污，抗高温高湿耐酸碱，抗腐蚀强，它可以用任何物体来触摸,可以用来写字画画。