ATP8900Mini is an on-site analysis equipment for rapid and accurate identification of unknown compounds. It is made in China and is self-developed. It is mini, lightweight, durable. The advantages of fast, accurate, high efficiency, and intelligence are perfectly integrated. It has the characteristics of high spectral resolution, low power consumption, light weight, and small size. It can easily meet the sampling needs of the first responder on site. The design of the whole machine is simple and elegant, including a large intelligent touch screen, a fully automatic ATR pressure device and a comfortable handheld terminal. The crystal is made of pure diamond and embedded in a passivated stainless steel plate, which can withstand various solid, powder, fiber, liquid, paste and other samples such as strong acid and alkali and hard rock. Liquid and pasty samples can be tested directly without a pressure device, and other samples only need to be placed in the middle of the ATR crystal, and the pressure head will automatically press down to ensure the consistency and convenience of the pressure during the analysis process.