Prior to this they were packaged in small local factories using the 1950s model of handpicking chocolates from the production line. This continued until half eaten chocolates were discovered in a small number of cases. Manufacture and packaging moved to a larger scale with the exception of some small Welsh towns which still retain the 1950s model.
Factories"Maltesers Coming To US in 2017" from Brand Eating (October 16, 2017)