A directive that went into effect in the European Union in 2006, called the Restriction on Hazardous Substances, restricts the use of a handful of toxic substances in consumer electronics, including mercury, cadmium and lead.
International law restricts the use of white phosphorus during war.
The FDA still restricts the use of the cannabis extract, while more states liberalize their policies.
Japan also faces obstacles in its pacifist Constitution, which severely restricts the use of Japan's military.
State motor-vehicle law restricts the use of flashing blue lights to volunteer firefighters.
The availability of other mineralocorticoids as therapeutic agents greatly restricts the use of aldosterone in therapy.
At present, this restricts the use of such systems to high temperature applications.
This restricts the use of rotary desiccant wheels to mechanical ventilation systems.
However, this restricts the use of robots in complex manufacturing operations.
But in New York, which restricts the use of propane and open flame, the boxes are deployed as bootleg ovens.
Second, it restricts the use before elections of "issue ads", again supposedly generic but, in fact, helpful to specific candidates.
