A pleasant Christmas is waiting for me if I …

Hi, everyone! Are you preparing to have a special Christmas now? I hope I can have a pleasant Christmas if I can finish my thesis about laser before Christmas. No sooner had I started to write, than I searched a lot on the Internet for information about the history of laser and various kinds of laser pointer pen, and the age of users who buy laser pointer pens. After a week’s preparation, I found among those who buy electronics, more than 50% users regarded 50mw green laser pointer pen as one of the best laser pointer pens both in local stores and in electronic products wholesale shops. In addition, I determined to compare the features of 20mw green laser pointer pens and 30mW Green Laser pointer pens. So I need more information, could any of you help me with it; any of suggestion will be appreciated here. Thanks a lot.