Warning: This is a flammable gas. The can is D.O.T. approved, and has all the legal warnings needed to inform you that this is a dangerous flammable gas. Unlike most of the Taiwan, China Green gas on market. Most of the green gas on market is Propane but not labeled as such. This can be dangerous since those green gas cans do not say ingredients are flammable. This is misleading, and could put persons in an unknown dangerous position. So we recommend this product. The companies misrepresenting their product to get by customs are not informing you of potential hazards.