1.high speed hdmi cable 2.Audio Return Channel 3.Own factory,offer OEM service 4.6 year experience of making hdmi cable SPECIFICATIONSConductorsHigh purity Oxygen Free CopperInsulationOuter Jacket with protective nylon sleeve. (color optional)Contacts24K Gold PlatedConnectorsMetal shell type (optional)Available lengths3FT to 50FT ( 1m,1.8m,3m,5m,10m,15m ) optionalAvailable terminationsHDMI,19PIN, ...