The air permeability and the randomness of air permeability test of different shoe upper leather, shoe lining single -layer material and compounded samples were studied.
对不同鞋面革、鞋里材料单层和复合试样的透气性及其测试的随机性进行了试验研究。
Source potential suppliers for assigned raw material, Collect samples, compare price, follow up sample test and improvement.
原材料供应商开发，收集样品，比价，跟踪样品测试及改进。
The partial test results and project samples of ACF needle felt filter material have also been given.
给出了部分滤料的试验测试结果和梯度针刺毡滤料使用工程示例。
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