Please allow us to introduce our company. We are UD.Thessa, we are located at Surabaya, Indonesia. Damar Batu is our mainly products through the years. Our Damar Batu products are: -Bombay Grade -Kalkutta Grade -Powder Grade We also provide Gum Copal as our other products. Our Gum Copal includes: -PWS Grade -DBB Grade -Dust/Powder Grade