The substances inside are: iron powder, aluminum powder, coke powder, activated carbon.
The reason why it can be heated because: the use of roasted diatomaceous earth, iron powder, aluminum powder, coke powder, activated carbon, salt composed of a bag, after rubbing can be heated up to 60 ℃, can be used for winter warmth, medical hot packs.
Principle: add quicklime, sodium carbonate and water, the temperature can rise to 120 ° C used to heat meals or steaming food, the temperature to maintain a long time 20 minutes down to 100 ° C, 60 minutes after the drop to 60 ° C.
High-speed rail box lunch: lunch provided for passengers traveling on high-speed rail. It is usually served in simple fast food box. The price varies.
Railway department response: high school and low have
Less than thirty or forty yuan, more than sixty or seventy yuan, it seems that in the high-speed rail is only these high-priced boxed lunches, for most of the car, 15 yuan boxed lunches are just a legend? Recently, netizens have been complaining about the high-priced boxed lunches on high-speed trains. There are also netizens in the form of bantering tips on how to buy a 15 yuan boxed lunch, and said that when the 15 yuan boxed lunch is sold out, the need for higher-grade boxed lunches sold at 15 yuan.
Subsequently, the reporter contacted the Shanghai Railway Bureau. The Bureau of the relevant staff said, the Bureau of catering on the train, there is an outsourcing company is responsible for, due to more passengers on the train, the demand is different, will provide a variety of prices of boxed lunches.
The "train service quality specification" does have provisions, "the supply of a variety of varieties, there are high, medium and low different prices of pre-packaged drinking water, boxed lunch and other travel drinking food, 2 yuan pre-packaged water and 15 yuan boxed lunch is constantly available". In other words, the train must be supplied with boxed lunches priced at 15 yuan, but there is no provision for "higher-end boxed lunches to be sold at 15 yuan in the event of a shortage of supply".
Why do the stewards not take the initiative to recommend 15 yuan of boxed lunches? The railroad did not respond.
So, if passengers insist on buying 15 yuan box lunch sold out how to do? The staff said that passengers can reflect this situation to the nearest to the chief steward, they will urge the train catering department in a timely manner for the supply, and can be contacted at the nearest station to replenish, in order to protect the passengers' dining needs.
Spring Festival is coming, the service first. 15 yuan box lunch on behalf of, and not just low prices, but the railroad department more comprehensive and diversified service concept