Pass ISO9001 test 70 kinds, printing function G.W: 10KG V:68*41*23CM Test N,P,K, PH, organic matter, soil PH, soil salinity Function:Test N,P,K, PH, organic matter, soil PH, soil salinity, with storage and printing function, built-in the amount of nutrients needed for growth of 70 kinds of crops, can provide guidance for fertilizing amount according to needs, with printing function Characteristic ...