pen type ph meter with lcd display for water, liquid, aquarium, 0.0 - 14.0 pH Quality Choice

   Xi 'an YunYi instrument co., LTD. (YunYi group) its subsidiaries respectively : valve factory, pressure factory, meter factory of eight subsidiaries, such as annual sales into the billions.Xi 'an YunYi group pressure gauge factory mainly produces all kinds of pressure gauges, including precision pressure gauge, electric contact pressure gauge, explosion-proof pressure gauge, etc., in the field of pressure measurement gauge of factory products by the vast number of measuring workers also mainly include all kinds of pressure source, JY series piston type pressure gauge, pressure gauge calibration apparatus, etc Xi 'an YunYi group valve factory is the most important and largest national gate valve, globe valve, ball valve, butterfly valve, hydraulic control valves such as general supplier of valve.In petroleum, chemical industry, metallurgy, electric power, building, heating, water supply and other industries with high visibility and influence.Products have been in short supply, precision casting, hot forging, heat treatment, welding, metal cutting processing, machining, assembly, performance test and so on more than ten workshop;With forging casting practice, special valves, three big series more than one thousand specifications varieties best-selling products at home and abroad market Xi 'an YunYi corp. 's operating the xi 'an instrument main instrument is committed to providing more information to provide one-stop solution for prerequisite.

OEM & Customize

We support OEM service, you can make goods according to your samples , color, material and so on for the custom. 

Online Service

It is a twenty-four-hour service that allows you to send information at any time of the day or night.we will reply within 12 hours. 

Design Team 

we have design team  to make customized products , you can  send your  samples  or drawing  to us  and our team  will  make samples for you  . also  we can design products  according  to your  description. 

Easy Payments

We accept all kinds of  payment terms  like L/C T/T ,we protect all buyers .ensure that no risk to do business with us .