We at icedive.is have just started to teach tech diving. This includes TDI intro to tech, IANTD advance nitrox diver that goes over gore skills for tech divers and uses of gas for decompression for dives no deep then 42 meters. Also IANTD recreational trimix which goes over using trimix on traditional recreational depths 0 -39 meters and with out decompression stops but keeping your END(Equivelent Narcotic Depth) low.
We have also started to sell scuba equitment from two producers. One is Dive Rite that was formed in 1984 and has been a pioneer in the dive industry buy offering some of the first wings solely designed for twinsets. The other company is Xdeep which is a european producers best known for their outstanding side mount wings.