General items: car washing equipment sales: special equipment sales: machinery parts and parts sales; office supplies sales: traffic and public management signage sales; washing machinery sales; auto parts wholesale; charging pile sales; computer software, hardware and auxiliary equipment wholesale parking lot services; loading and unloading and handling; Internet data services; software outsourcing services: information system integration services; Internet of Things technical services; special equipment rental; storage equipment rental services: machinery and equipment leasing services; transportation equipment rental services; typing and photocopying; advertising production; automobile trailers, rescue, obstacle removal services; motor vehicle repair and maintenance; daily appliance repair; daily appliance repair; communication equipment repair; car washing services: electronic and mechanical equipment maintenance (excluding special equipment); daily necessities sales: satellite mobile communication terminal sales; paper products sales; machinery and equipment sales; office equipment sales; station hydrogen storage facilities sales: water pollutant monitoring and detection instruments sales: environmental emergency technical equipment Except for projects subject to approval according to law, business activities shall be carried out independently in accordance with the law with a business license)