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The UL (Underwriters Laboratories Inc.) Registered Firm Mark is a mark you will never see on a product. Instead, it indicates that a particular facility has passed UL's evaluation to quality assurance standards and is used in promotion and marketing by companies with quality assessment programs audited by UL. The standards UL uses are the ISO 9000 series of quality assurance standards; QS-9000, the quality standards developed by the Big Three U.S. auto makers for their suppliers; and ISO 14001, the standard covering environmental management systems. Background on ISO 9000:
The ISO 9000 series provides general quality management and quality assurance
guidelines as well as quality system models that can be used by any type or size company anywhere in the world.
The Geneva-based International Organization for Standardization (ISO) published the ISO 9000 series of standards for quality assurance in 1987. Its goal was to provide guidelines for consistent quality practices across international borders.
The Series:
Many of the clauses in ISO 9000 focus on the relationship between supplier and customer. ISO registration helps suppliers demonstrate their capabilities to meet quality requirements. It helps purchasers obtain a higher degree of confidence that products and services delivered can continually meet their requirements. In the series, the specific standards break down as follows:
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