[Hong Kong Stock Market PCB Concept Stocks Decline at Market Open, Kingboard Laminates Drops Over 11%] According to DeepTech TechFlow, on July 28, Hong Kong stock market PCB concept stocks declined at market open. Kingboard Laminates (01888.HK) fell over 11%, Wong's Kong King Technology (01989.HK) dropped over 8%, Kingboard Holdings (00148.HK) and Victory Giant Technology (02476.HK) fell over 7.5%, while Han's CNC (03200.HK) declined over 6%. (Jin10)