... of medical X-ray and industrial crack detection. It has the characteristics of dampproof, wearable, washable, heat-resistant, no ... dampproof, wearable, washable, heat-resistant, no fungus adhering to the film, moistureproof fixing solution, and surface dropping proof. Its quality ... there is some dirty spots on it, use the absorbent cotton or the soft cloth with 70% watery alcohol or distilled water ...