KN95 PM2.5 mask factory Our History The factory is located in Building B, Hangsheng Technology Park, Yangzhou City, China. It is an independent (YGLY, IND) brand enterprise integrating production and sales. Our Factory Since its establishment in 2010, the factory has been approved by the US FDA and authorized by SGS,CE and ISO13485. Its purpose is total quality management, quality first, brand...