1.manufacturer price 2.best quality 3.quicl delivery 4.good service gum rosin 1.Property Gum rosin is a natural resin obtained by distillation from the liquid of sticky secretion. It's a transparent and brittle solid material. Colar from slight yellow to yellow red, a slight sheen in the surface. With incense resin odor. The quality of product in the process conforms to China national standard( ...
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