In the USA, the Helms amendment to the 1990 Arms Export Control Act specifies that all activities affecting the development or production of electronics, space systems or equipment, and military aircraft shall be sanctioned if that country violates the Missile Technology Control Regime. In this respect, sanctions were invoked against China in 1993, for its sale of M-11 missile parts to Pakistan, effectively preventing about 400 million dollars of exports (mainly communication satellites) from the USA to China.