We can make series of gauges for different gas with varied diameter. Oil type and dry type.            LONG TERM IS ONE OF THE LEADING COMPANY SPECIALIZED IN HVAC AND LOW VOLTAGE AREA. WITH OUR PROFESSIONAL TEAM, WE HAVE DEVELOPED VARIES SERIES OF PRODUCT COMPLIED WITH ISO AND INTERNATIONAL STANDARD (UPC,NSF,UL). OUR PRINCIPLE IS: QUALITY ENSURES SURVIVAL.
WITH TIME GOES BY, OUR PRODUCT IS POPULAR ALL OVER THE WORLD. FURTHERMORE, WE HAVE ALREADY SET UP SOLE AGENT IN MANY COUNTRIES IN ORDER TO BETTER MEET CUSTOMERS' RAPID CHANGING REQUIREMENTS.       WE BELIEVE THAT YOU CAN FIND WHAT YOU NEED FROM OUR WEBSITE, IT IS YOUR WISE CHOICE TO CONTACT US. WARMLY WELCOME YOU TO WRITE MAIL TO US DIRECTLY.