Shenzhen Sir Door is a collection of professional design, development, production as one of the large-scale manufacturer base. Company's brand "Sir" ", "Renault" poly - door flower factory "three major brands of security door series. Product range covers Stainless steel security door Antique bronze craft door of the lacquer that bake Cast aluminum bronze explosion-proof armored door Imitation wood grain PVC steel door interior wooden doors Leading products have six series, hundreds of varieties of models.