YaDiTe Casting Group is specializing in Drainage, Building & Municipal Products & Services! Until now, we get the ISO 9001:2008 certified, TUV certified, BSI Kite-marked, SGS certified and NF certified. During the construction of Bird\'s Nest/Olympic Stadium------Beijing National Stadium, our manufacturer exclusively supply steel keel and cast iron grates for them. We are proud of that, for we are more confidence about our high quality grates for bird\'s nest, for Beijing 2008 Olympics.