Ndife kampani yaukadaulo yomwe imayang'ana kwambiri kupanga quartz kwazaka 10.
Chiyambireni ku 1999, Zomera zopitilira 100 za PSA, kuphatikiza zida zazikulu kwambiri padziko lonse lapansi za VPSA-CO ndi VPSA-O2 zida, zidapangidwa ndikuperekedwa ndi PIONEER.