... DB connectors, RCA jacks, hooks, etc. Our Headphone Adapter as well as other products mainly sell to North ... foreign countries. Our monthly production capacity of Headphone Adapter is 1,000,000pcs, but this is not ... even larger, we can surely do more Headphone Adapter than present. Our factory has also been certified ... the first fastest time. Universal Headphone Adapter with 2.5mm Male to 3.5mm Female