On January 15, the natural rubber raw material market in Thailand saw an increase in prices: RSS (Ribbed Smoked Sheet) was quoted at 61.60 THB/kg, up by 0.20 THB/kg; latex was quoted at 58.20 THB/kg, up by 0.20 THB/kg; and cup lump was quoted at 53.60 THB/kg, up by 0.10 THB/kg.