About Us WSL Instrument was founded in 2006. We have focused on flow, level meter and analytical instrument and more than 10 years. As a professional manufacturer, we always pay much attention on technology and service. Specific solution programme could be provided to different work condition. The SIL, explosion-proof, ISO, etc. certificated qualification and extreme standard let us keep very competitive in the current market. Our products are widely used in chemical, environmental, urban water supply and drainage, electricity, water, metallurgy, pharmaceutical, sugar, petroleum, paper, steel and water treatment and other industries.China Differential Pressure Flow Meter factory website:http://www.wslinstrument.com/