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Total quality management mainly includes the establishment of a quality assurance system: in terms of resources, attention should be paid to the quality assurance of raw materials and purchased parts, and suppliers should be carefully selected; In terms of design, the JIT management system requires the designed products to have strong flexibility. In terms of personnel, it emphasizes the quality of people's work and the sense of responsibility for product quality. In the process of processing, attention should be paid to quality process control. Only under the effect of total quality management can we ensure good quality in every link of JIT system, make it try its best to achieve "zero defects" and realize "zero inventory".CW又一次一口气续订多剧，这次共13部，包括《黑霹雳 Black Lightning》（S4）。徐文长永远能看在别人前面，难道你已经放弃了么？左右逢源的胡宗宪，此时感觉自己是孤军奋战，赵文华走了，徐文长也走了，严党的船不让自己上，别人的门也不给自己开。CW又一次一口气续订多剧,这次共13部,包括《吸血鬼后裔Legacies》（S3）。尹旭嘴角lù出一丝不可察觉的笑意，这项伯吃里扒外倒真是卖力。? Set the methods in the above multiple factory method modes to static, and call them directly without creating instances.