Checking the quality of the products in the earlier stages of production plays a crucial role in quality assurance and cost control. Infrared thermal imaging technology could be used for almost all industrial manufacturing process control. The same principle also works with detecting moisture, pollution, the thickness of  material and the tightness of the composite material. Many processes that can not be monitored by the naked eye due to smoke obstruction, but these problems can often be solved by the infrared thermal imaging system.