we are a manufature of making air filter series and cleanroom serires in Tianjin China, our products are mainly used in electronic, pharmaceutical, construction project company, food industry, supermarket, central air conditioner, hospital, power station, etc. those need air purified fields. It covered 23800 squaremeters for researching developing manufacturing and office building. Our website is www.lcjinggong.com.cn, if there're any products you are interested in , please contact us freely to: Diviyany Yang, Tel: 0086-022-88397796, Fax:0086-022-58397967 As we're the manufactory we can supply large quantity and give you a low price especially we can establish a long business relationship.