With the signing of the Montreal Protocol, the manufacture of Halon 1301 and Halon 1211 was ceased worldwide. For aircraft fire extinguishers, Halon 1301 and Halon 1211 are recycled at our facility in Singapore. Each recycled batch is certified to meet the requirements of ASTM D5632-95.  With continuous replenishment from non-aviation customers switching to alternative agents, our Halon bank is large enough to ensure a supply for even the largest fleets.