The practice of transporting drugs via express deliveries has risen sharply in recent years, Shanghai's anti-drug committee said during its regular conference on March 14.

According to the committee, drug traffickers have turned to express deliveries, eschewing their normal tactic of using passenger luggage.

In 2012, drug trafficking by post rose by 150 percent year-on-year. About 86.1 percent of the crimes uncovered by municipal customs last year were conducted by express deliveries. Of all the drugs tracked local customs tracked down and seized last year, 58 percent were trafficked via express delivery.

Statistics show that the number of drug addicts taking two or more drugs is on the rise. Among all registered drug addicts, about 16.2 percent of them use both synthetic and traditional drugs, up 20 percent year-on-year.