Technical services, technology development, technical consultation, technical exchanges, technology transfer, technology promotion; Trade brokerage; Domestic trade agency; Artificial intelligence hardware sales; Electronic product sales; Household appliance sales; Electrical equipment sales; Instrument and meter sales; Electrical instrument and meter sales; Experimental analysis instrument sales; Communication equipment sales; Needle textiles and raw material sales; General merchandise sales; Electronic component wholesale; Auto parts wholesale; Clothing and apparel wholesale; Professional design services