Ambulance Import for Automotive Electrics Electronics

we are a company that manufactures ambulance and VIP vehicles, and we wish to develop our business in terms of quality. So, we want to check whether we can buy material and equipment from similar factories that make ambulance and VIP vehicles. We would also like to visit factories that make any of the components used in ambulance and VIP vehicles. For example, there might be a factory that supplies VIP seats only. For example, we use LED lightening in these vehicles, so we wouldn’t want to check a shop/factory that would have good quality LED lighting