Singapore Business Federation (SBF) chairman Mark Lee will be appointed to the board of Enterprise Singapore (EnterpriseSG) from Sept 1, the Ministry of Trade and Industry announced on Monday (Aug 31).The 53-year-old, who is also Sing Lun Holdings' chief executive officer, replaces 71-year-old shipping mogul Teo Siong Seng.Beyond his role at Sing Lun, Lee is also the president of integrated environmental and waste management company Blue Plant S…