Guarantee special thick wall casing to put down successfully and improve reaming after drilling technology to seal quality of salt layer.

保证特厚壁套管顺利下入和提高盐膏层封固质量的钻后扩眼技术。

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It is one of the important factors of ensuring the seal quality of cement sheath in a small clearance to raise slurry displacing efficiency in a slim hole.

提高小井眼水泥浆的顶替效率，是保证小间隙水泥环密封质量的重要因素之一。

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By giving products of assured quality a seal of approval, the system brings uniform quality standards to the market, introduces order, and increases the base of suppliers.

通过对质量有保证的产品盖上审核印章，该系统为市场提供了统一的质量标准，维持了秩序，并增加了供应商数量。

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During the 11-day duration of the 37th International Traditional Crafts Show, held from 22 October to 7 November at the Parque Bicentenario in Santiago de Chile, exhibits included the eight works that have been awarded the Seal of Excellence, a national distinction that seeks to highlight quality in handicrafts, based on the criteria of excellence, authenticity, innovation, respect for the environment, and market potential.

UNESCO: MEDIA SERVICES