1. This model of typewriter is efficient and endurable , economical and practical for middle school students.

　　2. The computer we produced is characterized by its high quality ,compact-sized, energy-saving and it’ also easy-to-learn and easy-to-operate.

　　3.They are not only as low-priced as other makers, but they are distinctly superior in the following respects .

　　4. You will get a 30% increasing production upon using this machine and also it allows one people to perform the task of three people.

　　5. This product will pay its own way in a year.

　　6.This machine will pay back your investment in 6 month.

　　7.The new type of suitcase card designed by our engineers is very ingenious and practical.

　　8.This kind of bicycle can be folded in half and handy to carry around ,especially useful during traveling and traffic jams.

　　9.The maximum speed of this kind of variable speed bicycle is 30 K/H .

　　10.These machines have few breakdowns and easy to maintain because of their simple mechanical structure.