After The two substrates are bonded, either an ultraviolet (UV) beam is directed, or warmth or possibly a strain is partly used the sealant concerning the very first and next substrates 510 and 520, for placing the sealant to fix the main and second substrates 510 and 520 (action 5S https://jiutustore.com/collections/optical-bonding-machine/Optical-Bonding-Machine