China Building Materials (3323.HK) tumbled more than 8% in Hong Kong trading to HK$6.07 with turnover reaching HK$1.027 billion.

The stock had surged over 20% yesterday amid a surge in PCB-related sector enthusiasm, triggering profit-taking pressure today. The Hang Seng Index dropped 412 points mid-session and slipped below the 24,000-point mark, adding broader market pressure to the decline.