What kinds of dangerous goods do trains check?

Dangerous goods mainly include all kinds of dangerous chemical raw materials and chemicals, submunitions, initiating explosive devices, agricultural pesticides and fungicides. Matches, gasoline, alcohol, banana oil, ready mixed paint, various strong acids and firecrackers commonly used in daily life also belong to the scope of dangerous goods. Dangerous goods can be divided into ten categories according to their nature: explosives, oxidants, compressed and liquefied gases, natural goods, inflammable goods in contact with water, flammable liquids, flammable solids, toxic goods, corrosive goods and radioactive goods. Among these dangerous goods: some of them can react violently after being subjected to high heat, friction and impact, producing a lot of gas and heat, and their volume expands rapidly, causing an explosion; Some don't even touch an open flame, but slowly oxidize and burn on their own; Some invade the human body or come into contact with the skin, which can cause poisoning and even death; Some are highly corrosive, which will infringe on human body or destroy other items; Some can emit invisible rays, causing radioactive damage to the human body and so on. As we all know, when the train starts and stops, or when it accelerates, decelerates and passes through a curve, the objects in the train will collide or be squeezed by inertia due to the change of speed and direction. In addition, limited by the place of the luggage rack, it is also easy to cause items to squeeze each other. In this way, if there are dangerous goods, it may lead to fire or explosion accidents. The train runs at a high speed, and all passengers are concentrated in the limited space in the carriage. In the event of a dangerous goods accident, the consequences are extremely serious. Therefore, in order to ensure the safety of passengers' travel and protect the national transportation equipment, the Ministry of Railways stipulates that dangerous goods are not allowed to be brought into the carriage. As passengers, they should seriously abide by these regulations, supervise each other and actively cooperate with the inspection by the railway safety department.