上海东丰五金有限公司成立于1993年，是台湾东铁股份有限公司的关系企业。目前已在北京、武汉、南京、济南、沈阳、郑州、昆明、长沙、合肥、福州、贵阳、哈尔滨、西安、南昌成立了十四家分公司，以及上海、青岛、大连三家营业处，并透过分公司建立二级销售网路。
GMT品牌的五金产品遍布大陆各地，各省市均设有强力的经销商，在建筑界享有很高的**度。 主要产品有：
GMT地弹簧、门夹等高档建筑五金，进口逃生门锁、拉手、闭门器、门锁系列以及日本原装GMT自动门。现以GMT品牌结合日本、台湾优良厂商，已建立**好的通路，并大量提升每项产品的市场占有率，而且持续高度成长。本公司十分注重GMT系列产品的质量和售后服务，将持续竭诚为广大客户服务。
Shanghai Tong-Feng Hardware Co., Ltd. was established since 1993
and is the associated company of Eastern Iron Enterprise Co., Ltd.
in Taiwan. At present time we have fourteen branches in Beijing,
Wuhan, Nanjing, Jinan,Shenyang,Zhengzhou,Kunming,Changsha,
Hefei,Fuzhou,Guiyan,Harbing,Xian,Nanchang,etc.. Through these
branches we have extended our sales network. All kinds of hardware
with "GMT" brand are sold throughout China. Moreover, we have
competitive distributors in all cities and our brand is obtaining a
well-known prestige in the field of building hardware. Our main
products are covering: building hardware with high level such as
"GMT" floor hinges, door patches, imported exit devices, door
pulls, door closers, door locks and "GMT" automatic doors made in
Japan. Now we have established the best sales network with "GMT"
brand gathering excellent manufacturers of Japan and Taiwan. Also
we have promoted greatly the sales percentage of each item of our
products in the market and the percentage is growing up
continuously. We appreciate very much the quality of our products
and our service after selling. We will continuously and sincerely
serve our expanded customers.
