In 1998, we launched the ISO 9000 international quality system. We awarded with the ISO 9002 certificate by British Standard Institute (BSI). We further upgraded to the ISO 9001:2000 version in early 2002. In 2003, we are the first company to invite CTI licensed testing experts and the China National Testing Center in Beijing to jointly conduct thermal tests for RYOWO cooling towers. RYOWO cooling towers successfully achieved the ATC-105 standard and GB7190 Chinese Standard.

In 2004, we invited CTI STD-201 administrator to conduct certification tests and we are proud to announce that our FWS, FRS and FXS series cooling towers achieved the STD-201 standard. 　

In 2005, we invited CTI licensed testing experts to carry out the drift loss test under the witness of the university professors according to AS4180. 　

To cater the growing needs and requirements, our cooling towers fully comply with the Code of Practice, providing effective and energy saving services under regulation of the Hong Kong Electrical and Mechanical Services Department.