Manufacturers or importers of power banks are now required to get a TISI stamp on their products, and face punishment if they fail to do so.
Those producing or importing power banks illegally can face up to two years in prison and/or a fine of up to Bt2 million. Sellers of non-standard products can face up to six months in prison and/or a fine of up to Bt500,000.
TISI said there are more than 100 producers and importers of power banks, but so far only five local manufacturers and 27 importers have applied for certification.