Guangzhou Tophill Investment Co.,Ltd is a subsidiary of well known Evironmental&Engineering company of Guangdong Province and Guangzhou Jinlongfeng Environmental Equipment & Engineering Co.,Ltd. The main line business is to serve the company group of Financing,Investment and the development of relevant ancillary facility & accessories.Now, as the development of economics of the world and to optimize industrial structure, we have started to apply ourselves to the R&D of building aluminum alloy profiles like aluminum windows ,doors and relevant accessories , Building processing machines, Besides, we have established good relationship with IBT company from Australia , NEOMETRO building designing institute from Australia etc. Our products are very popular in Australia ,America, Japan, and Euro