Abstract: The present disclosure relates to an organic electroluminescent compound, a plurality of host materials, and an organic electroluminescent device comprising the same. By comprising the compound according to the present disclosure or by comprising a specific combination of compounds according to the present disclosure as a plurality of host materials, it is possible to produce an organic electroluminescent device having improved driving voltage, luminous efficiency, and/or lifetime properties compared to the conventional organic electroluminescent devices.

Abstract: The present disclosure relates to a silicone zipper bag, and more particularly, to an improved silicone zipper bag with excellent sealing properties with a triple sealing structure. Among other things, the present disclosure relates to an improved silicone zipper bag that not only continuously maintains safe and close sealing properties by increasing the effect of suppressing the opening of the central portion according to pressure distribution by adopting a curved sealing structure, but also fundamentally prevents defects in air bubbles or foreign matter (dirt) from being caught in and tearing an adhered area because two sheets are not laminated together but molded simultaneously to make one piece.

Abstract: The present disclosure relates to a silicone zipper bag, and more particularly, to an improved silicone zipper bag with excellent sealing properties with a triple sealing structure. Among other things, the present disclosure relates to an improved silicone zipper bag that not only continuously maintains safe and close sealing properties by increasing the effect of suppressing the opening of the central portion according to pressure distribution by adopting a curved sealing structure, but also fundamentally prevents defects in air bubbles or foreign matter (dirt) from being caught in and tearing an adhered area because two sheets are not laminated together but molded simultaneously to make one piece.