The pen holder is one of the stationery. For the barrel of vessels holding pens, mostly straight mouth, straight wall, mouth base, relatively simple shape, no big changes.
The board book is made from paper cardboard, there are 32 pages(16 sheets) including cover, 2 layers 300gsm C1S artpaper mounted together, paper weight is 600gsm, thickness is 0.85mm, printing with CMYK, glossy varnishing and round corners for all pages a