GS is a safety sign in Germany, and it can only be issued by a more authoritative non-governmental organization engaged in safety experiment and detection. GS certification is a kind of voluntary certification based on German product safety law (SGS) and tested according to European union unified standard EN or German industrial standard DIN. It is recognized as German safety certification mark in European market.

The GS mark indicates that the use safety of the product has passed the test of independent organization of credibility. GS logo, although not mandatory by law, can make manufacturers subject to strict German (European) product safety law in case of accidents caused by product failure. So GS logo is a powerful market tool, which can enhance customers' confidence and purchase desire. Although GS is a German standard, most countries in Europe agree. At the same time of GS certification, the products will also meet the CE mark requirements of the European community. Unlike CE, GS logo has no legal requirements, but because safety awareness has penetrated into ordinary consumers, an electrical appliance with GS logo may have greater competitiveness in the market than ordinary products.

The products applying for GS mark and certificate must be tested by the third-party independent certification agency according to European (EN) standard or German (DIN) standard, and the quality assurance system of the production enterprise shall be inspected, and the certificate can be issued only after passing the test. After obtaining the GS mark and certificate, the applicant can mark the GS mark on the product. The certification body carries out factory inspection on the production enterprises every year to ensure the conformity and consistency of products. GS is a safety sign in Germany, and it can only be issued by a more authoritative non-governmental organization engaged in safety experiment and detection. In general, the European market is more consistent with this sign. The main logo of GS remains unchanged, but the logo of each certification company has changed.