Thai Auto-part Manufacturers Association, From the government role in promoting the automotive industry of the country By starting to promote investment in the establishment of automobile assembly factories in the country in the year 1961, marks the beginning of the development of this industry seriously. During that period, the production of automotive parts in the country was still the production of parts for the sale of spare parts. Later, when the car assembly plant increased The production of parts therefore develops into industrial production. Automobile assembly plants begin to use components manufactured in the country. The growth of the automotive parts industry is ongoing. There were a lot of parts factory and able to produce many parts in many type.