Frequently, customers ask us if we have any mobile phones with special functions in the industry. Usually, the existing mobile phones cannot fully meet the needs of customers. The needs of customers are different from the application scenarios. It is difficult for customers to find a product on the market that just meets their market needs, and no mobile phone manufacturing company will produce a mobile phone that can integrate all of them because of this. The cost is high and it is difficult to implement, and many functions are not used to cause waste. Therefore, most industry application customers will let mobile phone R & D manufacturers tailor-made and customize them according to their own needs, to better meet user needs and feature smart phones with the highest cost performance.