手书认证。 这是一个实现签名认证系统，需要的人可以下载下来添加自己的一些修改就可以了-handwritten certification. This is a realization of signature authentication system, people in need can be downloaded from adding some of his own amendment on the

手书认证。 这是一个实现签名认证系统，需要的人可以下载下来添加自己的一些修改就可以了-handwritten certification. This is a realization of signature authentication system, people in need can be downloaded from adding some of his own amendment on the