TASK DEFINITION: Translate the given Spanish text to English
PROBLEM: Theliquid is preferably introduced by means of a sealed cartridge (5), which maybe supplied separately or as an integral part of the device.

SOLUTION: El liquido se introduce preferentemente por medio de un cartucho sellado (5), que puede suministrarse por separado o como parte integral del dispositivo.

PROBLEM: Methods for manufacturing such preservative compositions are also provided.

SOLUTION: También se facilitan métodos para fabricar dichas composiciones conservantes.

PROBLEM: The laminated dough may contain a filling.

SOLUTION:
La pasta laminada puede contener un relleno.