China's A-share major indices open lower, Banglang Optoelectronics drops more than 5%

36Kr reports that China's A-share major indices opened lower, with the Shanghai Composite down 0.21%, the Shenzhen Component Index down 0.51%, and the ChiNext Index down 0.5%; shipping and precious metals sectors led gains, with China Merchants Shipping up 2% and Western Gold rising more than 1%; communication equipment and electronic components sectors saw the largest declines, with Banglang Optoelectronics dropping more than 5% and Tianfu Communications falling more than 3%.