... ;* Low noise and less stone dustPicture 1Picture 2Picture 3Technical specification:Zhengzhou Keheng Industrial Machinery Co.,LTDZhangzhai, Miaowang Village, Zhongyuan Zone ... , Zhengzhou City, Henan, ChinaTel:0086-0371-67560811 67560822 67560833Fax:0086-0371- ...