PUBLIC COMPANY LIMITED COL PUBLIC COMPANY LIMITED COM7 PUBLIC COMPANY LIMITED COMANCHE INTERNATIONAL PUBLIC COMPANY LIMITED COMMUNICATION AND SYSTEM SOLUTION PUBLIC COMPANY LIMITED COPPERWIRED PUBLIC

PUBLIC COMPANY LIMITED COL PUBLIC COMPANY LIMITED COM7 PUBLIC COMPANY LIMITED COMANCHE INTERNATIONAL PUBLIC COMPANY LIMITED COMMUNICATION AND SYSTEM SOLUTION PUBLIC COMPANY LIMITED COPPERWIRED PUBLIC

PUBLIC COMPANY LIMITED COL PUBLIC COMPANY LIMITED COM7 PUBLIC COMPANY LIMITED COMANCHE INTERNATIONAL PUBLIC COMPANY LIMITED COMMUNICATION AND SYSTEM SOLUTION PUBLIC COMPANY LIMITED COPPERWIRED PUBLIC

PUBLIC COMPANY LIMITED COL PUBLIC COMPANY LIMITED COM7 PUBLIC COMPANY LIMITED COMANCHE INTERNATIONAL PUBLIC COMPANY LIMITED COMMUNICATION AND SYSTEM SOLUTION PUBLIC COMPANY LIMITED COPPERWIRED PUBLIC

PUBLIC COMPANY LIMITED COL PUBLIC COMPANY LIMITED COM7 PUBLIC COMPANY LIMITED COMANCHE INTERNATIONAL PUBLIC COMPANY LIMITED COMMUNICATION AND SYSTEM SOLUTION PUBLIC COMPANY LIMITED COPPERWIRED PUBLIC

PUBLIC COMPANY LIMITED COL PUBLIC COMPANY LIMITED COM7 PUBLIC COMPANY LIMITED COMANCHE INTERNATIONAL PUBLIC COMPANY LIMITED COMMUNICATION AND SYSTEM SOLUTION PUBLIC COMPANY LIMITED COPPERWIRED PUBLIC

PUBLIC COMPANY LIMITED COL PUBLIC COMPANY LIMITED COM7 PUBLIC COMPANY LIMITED COMANCHE INTERNATIONAL PUBLIC COMPANY LIMITED COMMUNICATION AND SYSTEM SOLUTION PUBLIC COMPANY LIMITED COPPERWIRED PUBLIC

and expected to be completed and able to recognize revenue since in May 2020. WIIK PT Company Limited (WPT) (Formerly known as “WOG ITR Water Solution Company Limited”)  Principally engaged in the

services. In Management's Discussion and Analysis and operating results for the Quarter 1’ 2019 Page 2 / 6 the past, the sales of dialysis solution continually increased, KT Medical Services Co., Ltd. has

treatment systems for medical services. By the 3rd quarter of this year, the sales of dialysis solution continually increased, due to the success from marketing of the new clients at the end of 2016, KT