For the special use environment of the rail transit industry, we have developed explosion-proof, waterproof, dust-proof, shock-resistant, outdoor highlight applications, and different touch types of products. With the help of the customer's system, the liquid crystal display products of Haishi have been widely used in high-speed railways, subway platforms and subway trains in big cities such as China, Hong Kong, Macao, Taiwan, South America, Europe, the Middle East, Southeast Asia, etc.