Shen Zhen Yage Technology Co., Ltd established in 2012 and are located in Economic Development Area, Shen Zhen City, Guang Dong Province, enjoying an ideal geographic position with convenient facilities, excellent craftsmanship and complete testing devies.We are a professional manufacturer of high quality Portable & digital refractometers, Pen type and online monistor PH meters, tds meter,ORP meter, ec tester, DO meter.soil ph&moisture meters, Digital scales.etc.. Our products are widely used in beer brewing, liquor brewing, sugar making, fruit juice processing, Planting(soil),Aquarium,Hydroponics,Environmental,protection,Food,Education, Military and Technology.Our brand "YIERYI" was registered in 2016, It always revolves around the theme of health, and our design elements are technology, fashion, simplicity and portability. All products will be tested, calibrated and used by ourselves to ensure that the quality is qualified and then promoted. We want to let this healthy brand enter every family and every corner of the world.Our Factory have attained ISO9001:2008 Quality System Certification. Our products have ROHS and CE Certification, our other some products also have type patent.We started exporting from 2013, At present, our factory sells our products to Europe, America, Southeast Asia and the Mid-East. Our annual sales volume are 5 Million - 10 Million usd dollar. We have a technical research and development team, sales team, production team, customer service team, the total number of people has exceeded 100. Our factory always attaches great importance to technological innovation and has been recruiting professional staff regularly. We also cooperate with research institutions to develop new products. To meet customers' high level needs, we always adhere to the enterprise spirit of "Unity, Industriousness, Exploration and Innovation". To reward our customers through our persistent pursuit for high quality products and first-class services, we wish to cooperate with customers from various circles to create a prosperous future together.