GTC Gas Techonology Components Co., Ltd. has been devoting ourselves to the wall-hung boiler area since 1999. We have been co-operating with G20 Engineering S.r.l., and produce Hydroblock and relevant control parts by ourself, which are sold well in China and overseas markets. Now we have established closed business relationship with more and more famous wall-hung boiler manufacturers. We GTC will obtain the certificate of ISO9001-2000 in March, 2008.