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Our Type I and Type IV storage tanks are tested and qualified in accordance with ANSI/NGV2 (2007) and are FMVSS 304 compliant. Additionally, the Type I cylinders can be manufactured to specific country or international standards including ISO 11439, ECE R 100, NZ 5454, ISO 4705 D, EN 1964, IS 15490, DOT, ASME and ISO 11120. CPI’s Type I and Type IV tanks are ideal for use in a variety of vehicle applications such as CNG powered automobiles, public transit, refuse and light, medium and heavy-duty trucks. Our cylinders provide a high volume to weight ratio, while maintaining high durability and keeping safe operation of utmost concern.