
The Public Health Ministry's regulations prohibiting the giving away of toys and lucky draws with snack products have also hit the business.
The research showed the cost of raw materials like wheat flour, palm oil, sugar and potatoes rose 50-100 per cent year on year last month.
Producers cannot increase prices when consumers have reduced snack budgets.
Snacks that are 10-20-per-cent cheaper and imported from Malaysia and Indonesia have prevented domestic products from increasing their prices.
With strong competition and costs rising, KResearch suggests snack producers develop flavour, quality, healthiness and packaging to compete with imports.