SPI Process & Manufacturing design and fabricate replacement-in-kind trays and tray parts for all existing conventional tray installations. SPI is your reliable source for complete trays, partial panels or various parts needed on bubble cap trays, sieve trays, fixed and floating valve trays installed in most existing towers. We specialize in quick delivery for towers up to 20 feet in diameter and with tray decks up to 1/4″ thick in common stocked alloys of Carbon Steel and Stainless Steel.