The campaign heated up on Monday when chief executives of three top telecom companies, AIS, True and DTAC, joined the campaign.
Somchai Lertsuthivong, chief executive of Advanced Info Service Plc (AIS) and DTAC boss Jon Eddy Abdullah took up challenges from Pawut Pongwittayapanu of www.tarad.com.
Suphachai Chearavanont, chief executive of True Corporation who was also nominated, upped the ante yesterday by donating 1 million baht to the ALS Association after enduring the cold water splash in front of his company.