1.Transmission Variability: The light transmittance of polycarbonate hollow sheets varies based on several factors. Thicker sheets or those with more complex multi - wall structures may have a slightly lower transmittance compared to thinner, simpler designs. For example, a 4 - mm twin - wall clear PC hollow sheet might have a light transmittance of around 85%, while an 8 - mm triple - wall sheet could have a transmittance of approximately 75 - 80%. The presence of colorants also affects transmittance. Translucent colors like milky white or light blue reduce the amount of light passing through, with transmittance values typically in the range of 30 - 60%, depending on the intensity of the color.​

2.Color Customization: In addition to standard colors such as clear, bronze, grey, green, and blue, many manufacturers offer custom color matching based on the RAL color system. This allows architects, designers, and homeowners to precisely match the PC hollow sheets to their project's aesthetic requirements. Whether it's a modern - style building with a sleek, monochromatic look or a colorful greenhouse in a botanical garden, the ability to customize colors adds a high level of design flexibility.