The registration address of hunan-choose smart technology ltd. Is located in the north building of the standardized industrial park in huai-chui city, hunan province. The registration authority is the market supervision authority of huai-chui city. The legal entity is represented by liu wah-chang and operates in the development, production and marketing of the following products: the tunnel smart crash prevention equipment, the smart channel management system, the anti-terrorism roadblock machine, the road wall, the lifting pole, the tyre breaker, the secure products, etc。