In the use of usb power pack full swing today, many people began to complain that it did not look so durable. A capacity of 4000mAh usb power pack can not be completely filled twice a 2000mAh rechargeable battery cell phone electric. Number of practical...

The loudspeaker manufacturers Shenzhen Hui grand Electronics Co., Ltd. recently launched a three Dezheng loudspeakers, the novelty of these three products: the loudspeakers can be used as a usb power pack to charge the phone. The above-mentioned three...