British engineering and building company specialized in roofing. Manufacturer of "Pabco-Malthoid Roof, Roofing and Dampcourse" (1914) and "Malthoid World's standard roofing" (1924). Advertised in the North China Daily News only.

Change of Chinese name from 登根 (Denggen) to 恆大 (Hengda).

Source: The Universal Dictionary of Foreign Business in Modern China, Sichuan People's Publishing House, 1995 (515).

上海广东路英商贸易行. 1906 年(或记作1900 年〉原杨树浦怡和丝头厂经理铃邓肯(A. R. Duncan)个人开办.经营建筑材料进口贸易，代理英、美、加厂商公司数家至十数家.产品包括屋商材料、卫生器具、地被材料、墙面砖、铺地砖、掬仲、墙粉、门窗材料、建筑五金、涂料、软木塞、纸板、采暖设备及疏泼机械、起重机械、自动加煤机等.1920 年代初由原代签有效人铃杰勒德(W.L. Gerrard)等接办，先后迁法界爱多亚路及福州路营业，买办胡宝庆.1930 年代初改组，注册为私有合伙商号，由原职员铃亚罗 (R.V. Yarrow) 等接办，华祥行名依旧。嗣迁江西路营业，并于长泯路设窗广，生产钢窗、钢门及工厂吊窗，承办相关工程及包工事务。1938 年尚见于记载，往来银行为"汇卒".

Rough translation

Shanghai, Guangdong Road, Ying Trading. 1906 (or as 1900), the original Yang Shu Pu and silk factory manager bell Duncan (AR Duncan) personal start. Operating the import of building materials trade, the United States, the United States, Canada, a few companies To the ten home. Products include business materials, sanitary ware, ground materials, wall tiles, floor tiles, Juzhong, wall powder, doors and windows materials, construction hardware, paint, cork, cardboard, heating equipment and sparse machinery , The lifting machine, automatic coal machine, etc. In the early 1920s, the original sign was valid for the use of the WL Gerrard, and then moved to the business circles of Ai Diao Road and Fuzhou Road. (RV Yarrow), etc., and moved to Jiangxi Road, and made a wide range of windows, steel doors and factories. Hanging windows, contractors related works and contractor affairs .1938 years still seen in the record, the bank as a "storm."