The Thailand Industry Sentiment Index (TISI) decreased for the first time in seven months to 92.6 points during the festive month of December last year, says the Federation of Thai Industries (FTI).
The indicator fell from 93.5 points in November because of many holidays, a decrease in production capacity as well as a drop in new goods orders.
"There were too many holidays last month, affecting purchase orders. Lower production capacity also affected revenue," said Kriengkrai Thiennukul, chairman of the FTI.