What are the dangerous goods in air transport?

Dangerous goods are those that pose a hazard to human health, flight safety, property, or the environment, and are listed in or based on the "Dangerous Goods Aviation Safety Transport Technical Instructions" hazardous materials list issued by the International Civil Aviation Organization (ICAO). Technology directives classified substances or items.

According to the currently valid international standards, that is, the International Civil Aviation Organization’s "Dangerous Goods Safe Air Transportation Technical Instructions" and the International Air Transport Association (IATA) "Dangerous Goods Rules", dangerous goods in air transport activities can be roughly divided into the following categories depending on their types. Nine major categories: Explosives, gases, flammable liquids and flammable solids, pyrophoric substances and gases released into the atmosphere, oxidants and peroxides, toxic and infectious substances, radioactive substances, corrosive substances, miscellaneous dangerous goods.

According to the dangerous degree of dangerous goods, dangerous goods can be divided into dangerous goods that can be carried by passengers and freighters, only dangerous goods that are transported by cargo planes, and dangerous goods that are normally prohibited from being transported but can be transported by special exemptions in the relevant countries, and In any case, the transport of dangerous goods is prohibited. Among these dangerous goods, there are various kinds of chemical products with obvious dangers, and also articles that are common in daily life and are easily overlooked by the public, such as perfumes, drugs, automobiles, and electrical appliances, as well as fish products that have been preserved by special means. Even some animals and fruits have certain risks in special circumstances. With the continuous development of society, the types of dangerous goods continue to increase.

Vacuum Forming Large Parts

Yiyongli is a leading supplier of custom plastic large part by vacuum forming process across a variety of industries.We can provide product design and manufacturing engineering assistance and is ISO 9001:2015 registered.


Vacuum forming is a very economical method for producing large plastic parts.It offers lower cost tooling and quicker prototyping than other technology. Vacuum forming is best choice compared to other manufacturing methods such as complex fabricated sheet metal or fiberglass, in large, complex shapes which require a lot of metal fabrication, grinding and finishing. Vacuum forming also compares favorably to injection mould in big plastic parts when small quantities.


Vacuum forming large parts are single component parts that come out of the actual product or a substantial part of the finished product. Usually they are enclosures or housings for equipment.Applications of vacuum forming large parts are seen in many industries, including medical equipment panels ,machine enclosures, engine covers for aerospace, transportation or construction industries, and rail-car interior trim or seat components.

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