1.)Yangzhou Fredm Machinery Co., Ltd. has had the patent authorization in SIPO (State Intellectual Property Office of the P.R.C) for the following blower with the Patent No.: ZL2013 2 0246066.x . 2.) Yangzhou Fredm Machinery Co., Ltd. is the only legal manufacturer of this utility model blower in China. 3.) It is illegal to sell and purchase this utility model blower made by any other manufacturer in China. 4.) Any violation to this intellectual property will be punished by the authorities, which will lead infringer to a final loss such as goods detained, goods confiscated, etc.