The electronic invoice has no steel seal. The gold invoice bought by Chow Tai Fook is an electronic invoice, and the electronic invoice is not stamped because the invoice stamp in the lower right corner of the new OFD format VAT electronic ordinary invoice has been cancelled and replaced by an electronic signature. Chow Tai Fook brand was founded in 1929. It is the first well-known Zhoujin Institute, engaged in jewelry retail, wholesale and manufacturing.