Halogen elements are frequently employed as fire-resistant components, however, they discharge poisonous fumes upon combustion, jeopardising both the environment and human health. To mitigate this potential risk, several countries and regions have restricted or prohibited the usage of halogen-containing substances/methods and encouraged the adoption of halogen-free materials/methods.

Definition of Halogen-Free Material/Process
Halogen-Free Material/Process refers to materials or processes that do not contain halogen elements like chlorine or bromine. Halogens are often used as flame retardants to enhance the fire resistance of materials.

However, burning materials that contain halogens can release poisonous gases, such as chlorine gas, bromine gas, hydrogen dichloride, hydrogen dibromide, etc., endangering the environment and human health.

The importance of halogen-free materials/processes
Protecting the environment: Halogen-free materials/processes help reduce the negative impact on the environment. Avoiding the use of halogen-containing products can reduce the emission of toxic gases, thereby reducing pollution of the atmosphere and water sources.

Health and safety: The use of halogen-free materials/processes helps to protect human health. The release of toxic gases can have serious effects on people's respiratory systems and health. Therefore, the choice of halogen-free materials/processes helps to reduce the risk.