Now with the economic development, between industry production technology and equipment is gradually improving, and the emergence of innovation gradually, and this situation lead to domestic synchronous belt number continues to increase, to the gradual intensification of market development. Although the factory said the quantity are many, but not all manufacturers are normal, most manufacturers do not conform to the normal condition. So what is the formal conditions: first, the approval by the relevant departments: synchronous belt manufacturer if it is a normal manufacturer, from when I was established through the relevant departments for approval, and hold the business certificates. And such manufacturers to provide product is usually have quality assurance, product purchase, people can rest assured that such products are what people really need. Second, the product quality is very reliable: there are normal manufacturer in the market and not normal manufacturer, product quality is the most fundamental difference, normal manufacturer is the most basic products are quality assurance, and not normal manufacturer in this area is not reliable. Manufacturers in the production process will be even more attention at the same time, the technology and equipment is advanced, the staff professional ability is stronger. So normal synchronous belt manufacturer should comply with this requirement. In short, only buy from normal manufacturer of synchronous belt, can effectively realize the product full play a role in the market needs.