青龙管业：关于控股股东及实际控制人部分股份质押及解除质押的公告

Group 1 - The company Qinglong Pipe Industry announced that its controlling shareholder, Qinglong Holdings, pledged a total of 2,800,000 shares [2] - The actual controller, Chen Jiaxing, released a total of 6,200,000 shares from pledge [2]