More precisely, Space Exploration has an extremely late-game set of belts called “Deep Space Transport Belts”. They have a few complications worth noting.
First off, there are multiple colors of every deep space component. Most of them are purely aesthetic, with the intention being that you can do extreme belt-braiding with the underground belts. The crafting recipe for each color besides the default black is simply a black component and a lamp (two at a time for underground belts), so the differently-colored miniloaders should follow suit.
Second, they are NOT 64 items/second. Their speed is actually determined by a config option, which defaults to 64. Miniloaders need to use that setting.