Every Chinese people knows that serious entermorpha bloomed in Qingdao marine in large scale in 2008. Qingdao government prepared a large quantity of oil booms to prevent the entermorpha from spreading. The serious entermorpha is affected by marine pollution and global warming problem and etc. Every Jun to Sep, the entermorpha will bloom and has bad affection to the tourist industry and channel safety. The PVC oil boom and sepcial design anti-current oil boom has are widely used to prevent the entermorpha from spreading and polluting the sea beach. We have supplied more than 20 thousand PVC oil booms and turbidity curtains to control the entermorpha which could not spread into beach.