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New silver tarnish protection

I am a jewelry maker in Hong Kong. Invented a new method of
protection for silver jewelry which might be the strongest ever
existed. The protection can also be applied in jewelry articles with
all kind of metal plating.

the below video link demonstrates the protection!

The chain which does not change color is Nava silver chain.

As I know the coating also works in silver plated jewelry!

Ray Chan
Kilopico Ltd.

To me, it looks like the solution makes the chain turn dark! That is
not my idea of tarnish proof.

Rose Marie Christison


I would like to know if you have any medical or sanitary test
regarding the hazzards of alergy or contamination that this product
can cause from being in contact with the skin.

Thanks in advance,