Sanhuan Group (6951.HK) tumbled in Hong Kong trading, with shares surging by 10% to HKD 116.100.

The stock hit an all-time high during regular trading, jumping sharply within five minutes. The move comes as the CPO concept remains active, following Huawei's launch of the OPEN NPO project in Beijing with partners. This initiative established China's first MSA for optical interconnects, aiming to advance GW-level AIDC technology and boost related industry stocks.