Dual-use goods are goods that are made for regular, everyday use but can have both civilian and military applications. So, they serve two purposes: one normal and one potentially dangerous.
Examples of dual-use goods include certain chemicals, materials, electronics, software, and technologies that have applications in industries such as aerospace, telecommunications, biotechnology, and nuclear energy.
Due to the potential dangers linked with dual-use goods, numerous nations have implemented regulations and export control measures to oversee and limit their transfer, especially to worrisome destinations or entities associated with weapons proliferation.
If you intend to export dual-use goods from the UK to another country, you are required to obtain an export licence. Read about dual-use goods here.