quality-class

例句：

1. 1. The company's product quality is consistently high, ensuring customer satisfaction.
   该公司的产品质量始终保持在高水平，确保了顾客的满意度。
2. 2. The new model has been designed with a focus on quality, aiming to offer the best in class performance.
   这款新模型的设计重点在于质量，旨在提供市场上最好的性能。
3. 3. Quality control measures are essential for maintaining the quality of products.
   质量控制措施对于保持产品的质量至关重要。