Whenzhou Zhengkun Machinery Co,ltd .integrating design,manfacturing and sales is a stocking enterprise.since it was founded ,with the puopose of Survival by Quality,Development by Credit we have rigidly emphasized the interior management and post sales sevice ,devoting ourselves to research new products and techinology modifications.With the world regualtions for making three-side sealing bag-making machine,we take full advantages of technology to make the enterprise develop as rapidly as possible.it has fully passed the CE and ISO9001-2000INT'l Quality System Verificatio