A-share lab-grown diamond sector rose in choppy trading. Huifeng Diamond touched a 30CM limit-up; Sifangda and Huanghe Xuanfeng earlier hit the daily limit. Zhongbing Hongjian gained more than 8%, while Guoji Jinggong, Guoli Electronics and Yingnuo L

2026-05-28

A-share lab-grown diamond sector rose in choppy trading. Huifeng Diamond touched a 30CM limit-up; Sifangda and Huanghe Xuanfeng earlier hit the daily limit. Zhongbing Hongjian gained more than 8%, while Guoji Jinggong, Guoli Electronics and Yingnuo Laser also climbed.