We-zd instrument co. Is a specialized manufacturer of electro-chemistry instruments. Our main products are ph meters (series) nutra-wanad ec / cf / ppm meters, dds-ec (ms / cm) conductivity meter, ph, ph skin, ph aquariums, oxygen (do) conductivity & orp electrodes, etc and accessories. Bearing in our minds that our customers need most reliable measurements, we have always been doing our utmost to supply quality products in our yeas of history. Most of our products are CE certified, and are ...
China