China’s police step up security for Shanghai Expo

A month away from the opening of the Shanghai World Expo, security has been beefed up nationwide in China.
Police have launched a nationwide campaign to control dangerous substances such as explosives, firearms and ammunition, toxic chemicals, and radioactive substances, said Public Security Ministry spokesman Yan Zhengbin at a news conference Wednesday.
All manufacturers of these substances would be inspected for safety risks, and managers of related firms based in Shanghai and adjacent regio…