KRRASS (Anhui) Manufacturing CO.,LTD. is an economic entity integrating manufacturing, installing, selling central duct equipments, also the professional manufacturer of duct terminal device, tube, component and duct equipment. Located in “town of machine tool”, Bowang District, Ma’anshan, Anhui, China.

KRRASS (Anhui) Manufacturing CO.,LTD. is a high-tech Joint Venture (JV) funded by Nanjing Klaus CNC Machinery CO.,LTD and Hong Kong RICH-DO INTERNATIONAL TRADING CO., LTD, specialized in manufacturing duct production lines and round pipe equipments.