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VST Inc is a technology development, manufacturing design and consulting firm established in the USA in 1988.  They designed and developed the first true precision espresso filters, and manufacture the best precision baskets available on the market today. Their 20g filters have been selected for the WCE World Barista Championship every year for the past 9 years. VST is the only precision filter manufacturer in the world that images every basket using a patented digital machine-vision imaging process to ensure authenticity and performance of every basket shipped.