Zhongshan Longsire Metal Products Co.,Ltd is a comprehensive corporation integrating product-manufacturing,selling and trade.with brand name "Longsire",and has over 10 years' manufacturing experience, OEM customers are warmly welcomed. Longsire Hardware products Passes ul Quality System Certificate , Our Tubular Leverset door locks,Big handle lock ,2 grade ansi door lock are widely exported to North America, Europe, Australia, South East Asia, Middle East, South America market and so on. We will always provide the best service to you.