Spectra colors coating,add pearltalinto PVDF paint(>70%PVDF),depending upon the pigment type and viewing angle,different wavelengths of light are relected,refracted and diffracted to the audience resulting in an ever-changing color gradient with iridescent highlights.It is widely used for public internal and external,multipe shops,exhibitions etc. 1.8 Advantages of alucoone 1)Complete Product Series with competitive price 2)Prompt lead time:10-15 working days after deposite. 3)Complete inspection system 4)Official Cettificates:ISO by TUV,BV,ASTM E84 5)Complete After-sales service system 6)Direct factory,14 years experience:Neitabond,since 2003 7)Free OEM Service 2.Alucoone  Total Solutions Products Thickness(mm) Surface finish Application Aluminum Panel Standard Solution 1 0.04-0.5 2/3/4 Polyester Interior 2 0.21-0.5 4/5/6 PVDF Exterior B1/A2 Grade Fire-Resistance Solution 1 0.21-0.5 4/5/6 Polyester Interior 2 0.21-0.5 4/5/6 PVDF Exterior 3 0.21-0.5 4/5/6 FEVE Exterior 4 0.21-0.5 4/5/6 Spectra Exterior Signage Solution 1 0.04-0.3 2/3/4 Polyeater Interior 2 0.2-0.3 2/3/4 PVDF Exterior 3 0.2-0.3 2/3/4 FEVE Exterior Nano Solution 1 0.1-0.3 2/3/4 Polyester Interior(Anti-Bacterial) 2 0.3-0.5 4/5/6 PVDF Exterior(Self-Cleaning) Spectra Solution 1 0.21-0.3 2/3/4 Polyester Interior 2 0.21-0.5 4/5/6 PVDF Exterior Special Solution