Racing Harness Recertification?

First, to the best of my knowledge, NO seat belt company will recert anybody else's belts, only their own. So you will need to contact whoever's belts you have.
RCI used to offer a free recertification on their platinum belts, but they don't anymore. I don't even know if they still do recerts. Unfortunately I have a set of their platinums in a box that has never been opened.....and at least five years old. I guess they must have terribly deteriorated and become unsafe....while in the box.
I have Crow in one of my cars, and they still do recertification, last I checked. They used to be local to me but they moved.
Last, if you have latch/link I wouldn't bother trying to recert. While you wait for them to travel back and forth, you can get new quicker, and for almost the same money. My crow are camlock, so I'm gonna send them in.
(I think I have about ten sets of old belts around. I have found they are usefull for removing and installing engines, as a sling, so you don't scratch the paint, lol)