Dielectric Kins PVD IPDB super deep black coating maybe is the blackest  PVD coating in the market. The L # value can lower to 20,and keep the hardness as 2000HV.
And the deep black color is very pure,and  is very stable,uniform,consistent  on every face of 3D substrates. To be deep black even on  the matt surface!  No white dots appear in the IPDB black layer any more! No rainbow or other color shadow in black!
The deep black coating is anti-fingerprint, anti-stick,super hard,low friction-coefficient,very wear-resistant,anti-scratch,anti-corrosion, anti-reflective, high thermal conductivity,bio-compatibility......
Kins PVD IP deep black coating can be the best decorative coating, and the excellent functional coating. It can be widely used in the surface treatment of watch parts,jewelry parts,consumer goods,mobile phone, flat PC, optical parts,and other precision components.