Why is it black or green - 03/12/17
I used the last of my surplus H322. That powder is black. I opened a new can and it is green.
Why? I think I knew this answer as being green cotton based and black is wood as the cellulose source. But I don't remember.
Why? I think I knew this answer as being green cotton based and black is wood as the cellulose source. But I don't remember.