印度采购需求：洗车机、自动洗车机、单臂洗车机、非接触式洗车设备

I'm looking for detailed information on car wash setups, including the various types of equipment available and the features they offer. Specifically, I want to understand the components involved, such as washing systems, drying options, and any necessary chemicals or supplies. Additionally, please provide information on installation requirements and any potential maintenance services. It would also be great if you could share your pricing structure for different setups, including any packages or discounts available for bulk orders. I'm interested in options that cater to different scales of operation, from small businesses to larger facilities. If there are any recent innovations or best-selling models that you recommend, I'd love to hear about those as well.