ISO9001 is an international standard for quality control with which manufacturers ensure customers that their products are properly and consistently made to a good quality. Basically, ISO 9001 sets down the system that enables this quality and reliability to be maintained. (By "system" we mean the entire processes and regulations for the manufacture and selling of products.

For a company to receive ISO9001 certification (i.e. approval), it must prove that its production and related processes meet the necessary requirements. Special nationally and internationally recognized organizations in various countries inspect companies and their facilities periodically to check that the ISO9001 requirements are being met. So, the ISO9001 certification shows that a company has the necessary system in place and that its products are reliable.

GASTEC Corporation received ISO9001 certification in April 1998.