People's Republic of China
7 Dec 2009 Proposal for amendments to Regulation No. 28 (China) GRB/2010/2 2009-12-07 China
16 Feb 2016 Future development of Regulation No. 28 (China and CATARC) GRB-63-17 2016-02-16 Presentation from CATARC proposing improvements to the test procedures under UN R28. China CATARC