Four wire resistance touch screen is a 4-layer transparent composite film screen, which can resist fluid, food and various impurities. It has very strong adaptability to all kinds of pollution. While having good stability and reliability, it has the characteristics of light, easy assembly and low cost, and mostly used in portable mobile devices, personal assistants, industrial control, medical and other fields, and the maximum touch times can reach 1 million times. Meanwhile, TOPLAND can provide optical bonding service with LCD module.