BEIJING, April 24 -- China has imposed restrictions on seven European entities related to the defence sector, Beijing said today, citing their involvement in alleged arms sales or "collusion" with Taiwan.

The measures, which took effect immediately, are needed "to safeguard national security and interests and fulfil international obligations such as non-proliferation", the commerce ministry said in a statement.

The curbs apply to companies including Belgian guns manufacturer FN Herstal and German defence electronics firm Hensoldt, as well as the national aerospace research and development centre in the Czech Republic, VZLU Aerospace.

They prohibit exports of "dual-use items" to the seven named entities or transfers of such items that o...