<p>USA Made - All R134a from this listing is made in the USA. Purchasing USA made refrigerants guarantee purity standards that will keep your A/C working for a long time. BRAND - we only ship ZeroR Brand refrigerant under this listing in order to comply with quality standards.<p> <p>Shipping different brands allows us to source the best price for our customers. SSV CANS - Our cans are equipped with the 50 State compliant self-sealing valve design.Now you can easily store partially used R134a cans! NEW GAS - We purchase our R134a multiple times per year ensuring you get freshly made refrigerant. Old refrigerants can begin to rust if there is any moisture present which is bad for your AC system. We Make the DIFFERENCE - Have questions? Reach out to our technical support staff!<p><br>