Suphan Mongkholsuthee, chairman of the Federation of Thai Industries, said Wednesday the federation's survey of industrialists found increased confidence as the nation began a return to normalcy, the military-imposed curfew had been lifted and retail purchases of products including televisions, sporting goods and shoes, and food had increased thanks to the FIFA World Cup football tournament.
The Industry outlook index for the next three months stood at 101.9, rising from 101 in May.
Mr Suphan said that businesses were concerned with a possible negative impact on exports due to the United States' downgrade of Thailand in its annual human-trafficking report.
Business owners want the government to tackle the human-trafficking issue quickly and communicate its solutions to trade partners.
They also want the government to help them reach new markets overseas, streamline regulations and rapidly develop transport infrastructure to make Thailand the industrial centre of Southeast Asia.
The FTI found from its survey that firms had decreased concerns about oil prices, the global economy and local political situation, but had increased worries over foreign-exchange rates.