does the subject want to ask "the difference between the 16225.OF index of new energy vehicles in Thailand and the 399417.SZ index of new energy vehicles in Thailand"? Different organizations have different reference standards.

1. The organization is different. The 16225.OF index of China-Thailand Securities New Energy Vehicle was jointly released by cathay pacific fund and China Securities Index, while the 399417.SZ index of China Securities New Energy Vehicle was listed on Shenzhen Stock Exchange, which was compiled and maintained by China Securities Index Company.

2. The reference standards are different. The reference standard of the 16225.OF index of China-Thailand new energy vehicle is the first domestic new energy vehicle index approved by China Securities Regulatory Commission, while the 399417.SZ index of China-Thailand new energy vehicle is compiled and maintained by using the methodology of China Securities Index Company, covering important fields in the new energy vehicle industry chain, including leading enterprises in the fields of lithium batteries, motors, electronic control, materials, components and complete vehicles.