The cover is made of 250g copper film, which shows a delicate pearlescent effect under light, simulating the natural luster of apple skin. This process can not only attract children to read actively, but its waterproof and anti-fouling properties also solve parents' pain point of "picture books are easily dirty". The folding resistance of copper film cover is more than 30% higher than that of ordinary uncoated film, which is more suitable for young children to read it repeatedly.

Use 120g double-adhesive paper on the inner page, and the thickness is controlled within 0.15 mm to ensure that the cross-page illustrations are spread flat without wrinkles. For example, in the farm scene, the composition of geese and apple trees is 40% blank, and the low reflective characteristics of paper make watercolor illustrations softer-this design reduces the visual fatigue rate of children when reading by 22%. Double-sided printing uses environmentally friendly soybean ink, which has passed the GB/T 30326 standard test, and the heavy metal content is less than 0.5 mg/kg, which directly responds to the rigid demand of domestic parents for "safety and non-toxicity".

The children's picture bookPrint DesignPastoral hand-painted style is adopted, the main colors are apple red, pumpkin orange and grass green, and the saturation is reduced by 20% to protect children's eyesight. The illustration lines retain the pencil texture, and simulate autumn light and shadow with watercolor gradient. The text typesetting adopts "breathing layout", with no more than 3 lines of text per page, and the font size is enlarged to 18pt for parents and children to read together. In terms of printing, the combination of copper film cover and matte inner pages not only creates visual surprises but also reduces reflective stimulation, which is in line with the domestic market hot spot of "eye protection picture books".