beidou lake gps land survey machine

{"cid":"91190814","title":"CHC Brand Huayi GPS E91 GNSS Receiver with 624 Channels for Land Survey GPS","imgUrl":"https:\/\/img.chinax.com\/nimg\/d7\/55\/a9eda21f295a972c48838f86d6b5-200x200-1.jpg","attrs":{"Brand Name":"Huayi","Model Number":"E91","Minimum Order Quantity":"1","Certification":"CE","Place of Origin":"China","Payment Terms":"T\/T, L\/C, Western Union","Supply Ability":"1000 per year","Packaging Details":"With Standard Packing Way"}}

{"cid":"91193213","title":"Hot Sell USA P40 Board Geomato S900A GPS Gnss Rtk Land Survey With Low Price","imgUrl":"https:\/\/img.chinax.com\/nimg\/eb\/c1\/42f9d04905b66365c01bca059884-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"Mato","Model Number":"S900A\/S9II","Minimum Order Quantity":"1pcs","Delivery Time":"5-10day","Certification":"CE","Place of Origin":"China","Payment Terms":"T\/T, Western Union","Supply Ability":"10pcs\/day","Packaging Details":"suitcase and carton","Channel":"800 Channels","Initialization time":"< 10s","GPS":"L1 C\/A,L2E,L2C,L5","GLONASS":"L1 C\/A, L1P, L2 C\/A(GLONASS M), L2P","BDS":"B1,B2","SBAS":"WASS,MSAS,ENGOS,QZSS","Static measurement of plane precision":"\u00b1(2.5mm + 1ppm)RMS","Static measurement elevation accuracy":"\u00b1(5mm + 1ppm)RMS","RTK measures plane precision":"\u00b1(10mm + 1ppm)RMS","RTK measures elevation accuracy":"\u00b1(20mm + 1ppm)RMS"}}