Tuesday July 19, 4:43 PM Angry farmers force closure of China plantBEIJING, July 19 (Reuters) - Chinese farmers have attacked a pharmaceutical plant and forced it to close, angered that its chemical waste was ruining their village's crops, polluting its river and harming their health, the factory and officials said. The Jingxin Pharmaceutical Company in Xinchang county in the eastern province of Zhejiang has been closed since July 4 when a group of villagers stormed it, a company statement said, giving no details of how many were involved in the siege. But a posting on a stock exchange online message...