そんな高尚なものでもない
原料と設備費と、あとはだれでもできる製造費
海外製造じゃないと元とれんなこれ

[2022] Gel Pillow Manufacturing Process (Gel Pad Manufacturer)
https://www.youtube.com/watch?v=C9QwIoiftp8

[2022] Cooling Gel Pad Making Production Line For Memory Foam Pillow
https://www.youtube.com/watch?v=mYOPzUowa40

Cooling Gel Memory Foam Pillow Making Machine
https://www.youtube.com/watch?v=V-faLpR0wig