www.china-computer-case.com www.compucn.com Buys Group Co., Ltd , established in 1991, is one of the largest and the best manufacturers in China of all types of Computer Case, Mouse, PC keyboard, Cameras and Speakers . The computer case by the Cabinet Form Factor may divide into the type of desktop-slimline desktop and tower-full tower/micro tower/mid tower/mini tower/tiny tower. The computer tower case also could divide into the type of full tower case, mid tower case, micro tower case, tiny tower case and so on. The mid tower case and 3/4high tower case’s extendibility is moderate, this kind of tower case space is spacious ,and this kind of tower case is suitable for the PC. the popular mouse is the optical mouse now. they have 5 kinds of mouse as below:a. 3D optical mouse ,also can say it standard optical computer mouse , and 3D is for two buttons and a scroll wheel / 3 buttons (scroll wheel with one buttons) ; b. 5D optical mouse has another name : 5 buttons optical mou