Abstract: The present disclosure provides a face shield including one or more airstream-deflecting protrusions for deflecting airstream away from the wearer so as to avoid bacteria, virus or any other hazardous materials in the airstream from depositing on the head and/or hair of a wearer. The present disclosure further provides a full face shield including a flexible sheet, and the flexible sheet has a top portion comprising two folding structures located adjacent to lateral edges of the flexible sheet respectively for bending the top portion towards a forehead of a wearer. As the top portion of the full face shield is bent towards a forehead of the wearer through the folding structure, the face, forehead and a large portion of the front skull of the wearer can be protected.

Abstract: Techniques are provided for electrolessly depositing and electrodepositing a CoMoP barrier coating onto copper or copper alloys to prevent copper diffusion when forming gold layers on articles such as watch bracelets, watch cases, imitation jewellery, spectacle frames, and metal buttons.

Abstract: Techniques are provided for electrolessly depositing and electrodepositing CoWP barrier coating onto copper or copper alloys to prevent copper diffusion when forming layers on articles such as watch bracelets, watch cases, imitation jewelry, spectacle frames and metal buttons.

Abstract: Techniques are provided for electrolessly depositing and electrodepositing CoWP barrier coating onto copper or copper alloys to prevent copper diffusion when forming layers on articles such as watch bracelets, watch cases, imitation jewellery, spectacle frames and metal buttons.

Abstract: Techniques are provided for electrolessly depositing and electrodepositing CoMoP barrier coating onto copper or copper alloys to prevent copper diffusion when forming layers on articles such as watch bracelets, watch cases, imitation jewellery, spectacle frames and metal buttons.