They are plastic resin codes and identify the resin.
他们是塑料树脂编码和识别符号。
Use this performance resin ribbon for printing high-density bar codes and high-resolution graphics on a wide range of synthetic materials.
使用此性能树脂碳带打印高密度的条码和高分辨率的图形，就广泛的合成材料。
Use this enhanced resin ribbon for dense bar codes and graphics on a wide variety of materials.
使用此增强树脂碳带密集的条形码和图形各种各样的材料。
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