PAX Labs, Inc. is another USA based Company selling Dry Herb Vaporizers. Their dry herb vaporizers such as pax 3, pax 2, and pax era are their leading products. Pax vapes deliver the best-vaping experience through their dual use of Pax 3 vaporizers. You can use Pax 3 for loose leaf and extracts. Also, with up to 10 years of warranty Pax promises quality support for their end-users.