1. Spare no effort to keep our customers free from worries
2. Customers are our most authoritative critics and spokespersons
3. A slightest error may give rise to a great disparity in quality
4. Attentive, meticulous and diligent work always ensures satisfying quality
5. Tolerance of 1% of an error proves to be the start of a 100% failure
6. There are no picky customers but imperfect products.
7. Satisfaction of customers makes us proud.
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