$SCGBHD(0225.MY)$ & $TENAGA(5347.MY)$: Southern Cable Group Bhd has secured a contract extension worth RM99.6m to supply underground power cables and conductors of varied sizes to Tenaga Nasional Bhd. The contract was awarded to the company's wholly-owned subsidiary, Southern Cable Sdn Bhd, and will increase the total value of the group's ongoing supply agreement with TNB to RM854.3m