1). Item: LXB046 Door Lock 2). Material: Plastic, steel 3). Surface treatment :painted and galvanized 1. Specifica infornation1). Item: LXB046 Door Lock2). Material: Plastic, steel3). Surface treatment : painted and galvanized2.Trading show:1.2011.11. AAPEX in LASVEGA of America2.2012.2. NATM in TEXAS of America Black Door Flush Lock