Mitsubishi Gas Chemical (MGC), the world’s leading supplier of BT substrate base materials, has notified clients of delayed shipments due to tightening raw material supply. The growing shortage is expected to trigger mid- to long-term disruptions in the substrate supply chain. Rising gold prices and extended lead times are already inflating costs across the NAND flash controller segment, potentially benefiting suppliers like Phison Electronics and Silicon Motion Technology through higher pricing leverage.