Advertising services, namely, promoting and marketing the goods and services of others through all public communication means; Bidding quotation; Demonstration of goods and services by electronic means, also for the benefit of the so-called teleshopping and homeshopping services; Direct mail advertising services; Import-export agency services; Invoicing; Pay per click advertising; Purchasing and procurement services, namely, procuring of contracts for others for the purchase of goods and labor contracting services; Sales promotion for others; Updating of advertising material