Import-export agencies; sales promotion for others in the nature of promoting the sale of goods and services of others by awarding purchasing points for credit card use, promoting the sale of goods and services of others through the distribution of material and promotional contests, promoting the sale of goods and services of others by awarding purchasing points according to accumulated consumption; demonstration of goods; distribution of samples; providing advertising services for others, namely, direct mail advertising, electronic billboard advertising, newspaper advertising, radio advertising, television advertising, and dissemination of advertising for others via the Internet; commercial information and directory agency; professional business consultation; organizing exhibitions for commercial and advertising purposes in the fields of electronic products, office machines and equipment, construction machines and equipment, electrical home appliances and clothing; computer database management, namely, systemization of database information; hotel management; accounting; personnel recruitment; auctioneering; business investigations