MSN:pcpensales5 at hotmail dot com Shenzhen PC-PEN Co., Ltd’s predecessor was Derhui Electronics Co., Ltd that established in 1992, the first Taiwan owned enterprise in Xi‘an city. It is also the first mouse manufacturer in the mainland of China. In 1998 we set up TUBO Electronics Co., Ltd in Shenzhen. The company was focus on the designing, producing and selling of mouse. And it has clients from all over the world such as U.S.A, Japan and Korea for its excellent quality, capability and fashionable style of our products. The brand TOBO is comparatively famous in the early world field of mouse. Shenzhen pc-pen Co. Ltd. It is a high-tech enterprise in the field of laser digital products that collects in designing, producing and selling. It is also an exclusive manufacturer for mouse pen in the world. The company tries to offer the world best products in the digital fields as well as providing optical solution and improvement, which always keeping a head in handwriting input fields.