Which needleless syringe brand has a long shelf life? Need to buy.

Want to needleless syringe this medical equipment in the warranty is more attention, choose the warranty period of the needleless syringe is really better, I see my uncle is now using the Aipai Le needleless syringe is quite good, this brand of needleless syringe seems to provide a 6-year warranty, lifelong maintenance, and the service life of up to 12,000 times it is in the after-sales and durability of this piece of really quite trustworthy