http://www.paper-bagmachinery.com/ Cheap Hardcover Book Case Maker OUR HISTRY Hangzhou Rokin Machinery Co.,Ltd. is specialized in producing flat bottom paper bag machine, square bottom paper bag machine, shopping paper bag machine and related auxiliary equipment, etc. We have a high requirement for the quality of products and carry out a perfect modern management system. OUR FACTORY We have 30000 square meters of workshop and more than 100 workers. OUR CERTIFICATE We have obtained many certificates and patents, such as practical new type patent certificate, design patent certificate, invention patent certificate, CE, information tec