The core function is to transport dangerous gases with independent container (bottle) packaging, clearly adapting to dangerous goods category numbers 2.1 (flammable gases) and 2.2 (non flammable and non-toxic gases). It can transport common flammable gases such as bottled liquefied gas and acetylene, as well as non flammable and non toxic gases. Transportation beyond the medium range is strictly prohibited. When transporting different types of gases, corresponding warning signs of "flammable gas" or "non flammable gas" should be hung, with clear and standardized labeling. At the same time, they are only suitable for all steel cylinder packaging that has passed compliance inspection and has UN markings, to eliminate the hidden dangers of transporting unqualified packaging and comply with the management requirements of dangerous goods transportation media.