Can copper gold powder be used in oily or water-based systems?

These are two systems. They cannot be mixed. Both are oily and water based. Water-based only ZG-WB3101P / R.

Can water be used for screen printing?

For screen printing, the particle size is large and the color is bright. Water-based, generally used for inks, particle size 6-8um.

Can I use one product on all carriers for screen printing? Printed on T-shirts, business cards, invitations, leather and plastic.

The load is different, and the corresponding formula needs to be changed. Comes according to the recipe.

Can copper gold powder be used on varnishes? Use: Vacuum metallized aluminum substrate

The varnish can be used, but the solvent environment should be neutral and better. It cannot be acidic or alkaline. ZG-2072P / R is recommended.