H Series oven cured Cerakote is considered the world's leading thin-film coating in the firearms industry. However the guys over at KG Gun Coat might dispute that finding.
While the original Texas Gun Builders company primarily used the oven cured H Series product for most of the parts of the many firearms they coated, Cerakote also has a high temperature version which is air cured and gives you the ability to match the color of the firearm you're working on with a scope or other item that cannot be oven cured.
While Cerakote gets most of its notoriety from the firearms industry it also provides a tough thin and durable finish on many other products such as knives, tools, sporting and athletic equipment. Before the original company was closed Texas Gun Builders even used it to coat stainless steel tumblers for their sister company The Tactical Laser, before they engraved those cups.