Shanghai Shenwei Medical Gas Company supplies more than 90 percent of domestic oxygen cylinders throughout Shanghai, but due to the early discovery of positive employees at the filling plant, resulting in a complete shutdown of the company and the suspension of the distribution of oxygen to the Puxi area. The person in charge of the company said, there is still a batch of finished products in the field hope to be able to transfer as soon as possible. They will try, first to protect the urgent need of the public supply of oxygen cylinders.