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Gathering the oleo pine resin from pine trees and distilling into gum rosin, which has high value and wide usage, is an effective way to develop the economy of mountain regions. The gum rosin produced by our distiller more than 95% reach X grade and WW grade of expo...Click for details Search keyword: Gum rosin processing machine pine resin production line colophony production equipment pine rosin processing machine pine rosin pine resin colophony [2009-07-16 ]![]() |
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