Commercial writing

I am working on making a catalogue of new prouducts at work.
Actually it is nearly first time to do such a thing.
Well, while in university, I have made ads and thier copies as my second major. But it was in classroom.

As our products are educational materials, I should avoid to show too much commercial mood.
And to persuade the readers, it has to be very logic as well as showing the advantages of our prouducts. I have to stand at the middle of the balance.

I am sick of writing this.