Synonyms that are in the dictionary are marked in green. Synonyms that are not in the dictionary are marked in red.
Antonyms that are in the dictionary are marked in green. Antonyms that are not in the dictionary are marked in red.
Other products currently certified to National Standards under the GNBS Product Certification Scheme are PVC Pipes and Gold Jewellery.
Source: https://hgptv.com/gnbs-certifies-robin-hollow-blocks-to-national-standard/