Dry pink colouring
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The powder colorant is directly added to the silicone rubber with the small material and mixed in the smelter. The advantages are simple operation and low cost, but the mixing dust is large, polluting the environment, and is not easy to disperse uniformly, with color difference. If the particles are too hard and coarse, it will cause quality problems such as color spots, stripes or chromatographic cross-contamination, which are seldom used.
