Qingdao O. B. T CO., LTD is a specialized manufacturing designing and exporting enterprise. O. B. T have incorporates six factories and one sales company in Qindao. Our major products include all kind of glass wool,rock wool,insulation material,construction xxxxx tube,fibreglass etc. In the ongoing drive to grow, new and The employees at our company thank many customers around the world for your loyalty and support since 1997. We will continue to make every effort to meet your expectations. Our company has successively passed the ISO9001, TUV, SGS, INTERTEK INSPECTION. With our steady and high quality we have gained good reputation and powerful trust from our oversea market. Now we have monthly shipments to the USA, European, Middle east, South America and North Africa The principal aim of O. B. T iS quality is first, customer is supreme and reputation is forever Your satisfaction is our first aim! Your success is our success!