Xiamen is one of China's regions with rapid development of the TFT liquid crystal display (LCD) industry. Its industrial scale ranks sixth in the country and is the only pilot city with a national optoelectronic display industrial cluster. The city also has the largest R&D and production base of touch screen modules in the world. Xiamen's panel display industry reached an output value of 131.5 billion yuan in 2018, forming a complete industrial chain layout. Industrial parks include Xiamen Tongan Xiang'an Hi-tech Industrial Base and Xiamen Torch Hi-Tech Industrial Zone (Xiang'an).