Our sub-valve and regulator factory  improve our producing facilities and testing equipment incessantly along with the strengthening of management. Our annual capacity stands at 10 million units, all of which are exported abroad. Our products are characteristic of nice style, compact structure and assure reliable performance and safety in use. It enjoys a brisk sale to more than 30 countries and regions, such as United States, Europe, South America, Southeast Asia, Taiwan and Hong Kong, etc., receiving high reputation from the users.