Put forward three indexes for evaluating the quality of PVC plastics mixer and discuss its testing method and result judgement as well as the effect of the mixing quality on the finished products.

• 提出了评定PVC塑料混合机混合质量的三个指标，对其测试方式和效果判断进行了讨论，同时也论及了混合质量对制品质量的影响。