Hyundai Motor Company

Enpulse Co., Ltd.

Jung Nam Lee

Jangwon Seo

Yonggyu Lee

Sunghoon Yun

An adhesive film for a polishing pad including a plurality of through holes extended from a top surface to a bottom surface of the adhesive film, wherein a volume fraction of the plurality of through holes is 3% to 20% based on a total volume of the adhesive film, is disclosed.

Adhesive film for polishing pad, laminated polishing pad including the same and method of polishing wafer

A coolant control valve device may include a plurality of coolant passages through which a coolant passes; a valve including a plurality of valve wings, wherein each of the valve wings is disposed at an inlet of each of the coolant passages, respectively and has different heights from each other; and a driver moving the valve in a vertical direction thereof, wherein the valve opens and closes some or all of a plurality of inlets with a difference in time, depending on a movement range of the valve.

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Seoul, South Korea

Jung Nam Lee