The West Assam Milk Producers' Cooperative Union Ltd (WAMUL) has increased the prices of its milk products by Rs 1. The hike, which came into effect from today, was due to continuous increase in the prices of raw milk, processing cost and other expenditures, including fuel, electricity charges and transportation cost over the last couple of years, stated a press release. The supply of milk at revised MRP will be continued in the existing milk pouch till the arrival of fresh stock of packaging material printed with new MRP, the release added.