About us

About us



Jiangsu Top Composite Technology Co., Ltd. was established in Suzhou Industrial Park of China.


Passed ISO9001:2008 quality certification.


With the help of Bayer MaterialScience on polyurethane composite technology, Top Composite developed a new generation of fiberglass window & door system named GRPU. Its amazing thermal and acoustic insulation will bring a technology revolution in the window manufacturing industry. It is the best choice to replace aluminum window and ideal for high-cold area, noisy place, high-rise building and coastal region. Nowadays, GRPU energy-efficient system is the most important business of Top Composite.