Fecha de publicación: 12/01/2023 Fuente: Wipo Milk or dairy products Present invention relates to products having coupling of transparent sheet in the non-transparent sheet and easy method of coupling of transparent sheet with/in the non-transparent sheet without protrusion and without using any supportive adherence or one or more supportive item or technology. Present invention provides method of coupling of transparent sheet with/in the non-transparent sheet without any fear of breakage of transparent sheet.