COD/氨氮/总磷三参数测定仪产品型号：5B-6C ZN-ad 北京同德创业科技有限公司

p1Src=//y1.yzimgs.com/uploads_old/378650/2013081615140241_old.jpg&p2Src=//y1.yzimgs.com/uploads_old/378650/2013081615140241_old_1.jpg&p3Src=//y1.yzimgs.com/uploads_old/378650/2013081615140241_old_2.jpg