Recently Shanxi customer feed that purchased Hall speed sensor damage serious.It has quality problems， and suspect is my company supply. Although my company is the German expansion of the company‘s authorized dealers， the purchase of this type of products are all imported， in line with the user‘s attitude， and customer consultation to send samples to our company for identification. The customer‘s samples and my company‘s product comparison， the shape is similar， but there is a clear distinction， the main detection head imported products for the steel system， and counterfeit products for plastic or openings. After communication with customers， customers agree with my company view， will all change to my company‘s formal licensing products. These counterfeit products， buy cheap， but often failure， give customers the time and money loss is not negligible. The following figure is the difference between the actual shot and the two: