Definition: In this task you are given a Chinese paragraph related to a criminal case, your job is to give an answer of what the criminal charge is. Take note a) if there are multiple charges only one needs to be outputted b) the criminal charge should be in Chinese. 
Input: 公诉机关指控，2014年12月29至12月30日，王某甲纠集多人，围堵郸城县建某商品混凝土有限公司大门不让商品混凝土车辆进出工厂，致使生产的两车混凝土（C3防冻刑）运不出去被倒掉，经鉴定，给损失价值6862元。
Output:
破坏生产经营