Zhejiang Top Instrument Co., Ltd. is a specialized manufacturer & seller of agriculture instruement.For many years, our company has been concentrated on seed measuring, grain testing, soil examine and related professional agricultural instruments. Up to now, we have developed soil moisture meters, soil compaction meters, soil PH meters, soil tensiometers, area testers, intelligence germination chambers, microcomputer automatic seed counters, automatic kjeldahl nitrogen tester systems and other new products. We have got the ISO9001 quality Authentication .