How many movies have Panna Rittikrai and Saravuth Nakajad collaborated on?

They have worked on 4 movies together! Their first movie together was Ong Bak 2 (2008) while their highest rated movie together was Vengeance of an Assassin (2014). They have not worked together since Vengeance of an Assassin (2014). They are most known for their action films together.