Oasis And Tmpc Business Forum Office Administration Systems and Information Services, short formed as OASIS is a firm dealing in Writing & Display Boards, Plastic Storage Bins and crates, Computer accessories etc, which was started by Mr. Ramesh Joshi as its sole proprietor in the year 1984. Mr. Joshi did not have any experience in conducting a trading business. Nevertheless, he took a bold step and started the firm. With determination, strong will, and hard work, Mr. Joshi has built up the business and today the firm is dealing in computer accessories, office equipments, stationary etc and is one of the leading firms in city of Thane.