General items: Machinery and equipment sales, goods import and export, technology import and export, import and export agents, building materials sales, general machinery and equipment installation services, machinery and equipment leasing, electronic and mechanical equipment maintenance (excluding special equipment), ship sales, machinery parts and components sales, international ship management business, international shipping agent, domestic shipping agent, domestic cargo transport agents, international cargo transport agents, Transportation cargo packaging services, general cargo warehousing services (excluding hazardous chemicals and other projects that require approval), port tallying, domestic trade agency (except for projects that require approval in accordance with the law, independent business activities shall be carried out with the business license in accordance with the law)