Siyinkampani engochwepheshe egxile ekukhiqizeni i-quartz ehlanganisiwe ngaphezu kweminyaka eyi-10.
Kusukela yasungulwa ngo-1999, ngaphezu kwe-100 PSA Plants, okuhlanganisa amayunithi amakhulu kunawo wonke emhlabeni - isethi eyodwa ye-VPSA-CO kanye ne-VPSA-O2, aklanywe futhi ahlinzekwa yi-PIONEER.