Pre-Registration - 31st Quadrennial Session of the CIE in Nanjing, 2027 | 预注册-国际照明委员会（CIE）第 31 届大会（2027 南京)

Express your interest in the upcoming 31st CIE Quadrennial Session, to be held in Nanjing, China, in 2027. By registering, you’ll ensure you're among the first to receive updates as soon as further details are confirmed. | 请表达您对即将于 2027 年在中国南京举办的国际照明委员会（CIE）第31届大会的兴趣。通过注册，您将能在大会更多细节确定后第一时间收到更新信息。