This is major progress and will surely improve customer satisfaction.
这是主要的改善，肯定会提高客户满意度。
Reasonable and effective cost control and continuously improve customer satisfaction.
合理、有效控制成本，不断提高客户满意度。
Reasonable and effective cost control and continuously improve customer satisfaction.
合理、有效控制成本，不断提高客户满意度。
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