To ensure our superior quality of our products, we build close relationship with government regulators and authorities in China including, China Central Research Institute of Building & Construction, China Building Material Academy and Beijing Center of Physical and Chemical Analysis. Our products have passed hundreds of tests by the 3rd party lab. Our company has been certified with ISO9001, ISO14000 and QS national standard. We also have work with SGS, Intertek and other 3rd international qualification organizations.