are shipping by sea /air freight , Express.Kerong Industrial Company Limited was founded in 2002 and specializes in electronic locks, home safes, and other related security products. With our strong R&D capability we currently have a range of over fifty high-tech products of our own design and hold over twenty national utility patents as well as two new product invention patents.?Over the years, KERONG has consistently focused on product development as well as personnel training to ensure quali