Product feature: Produced strictly according to GA25-92 standard issued by the ministry of Public Security, the doors are made of plastic coated steel sheets which are pressed into patterns, strengthened in the interior with theft-proof metal frame and stuffed with rigid polyurethane foam. The lock and hinges which are all theft-proof, are trimly fixed and protected. This kind of high-strength doors are theft-proof, fire insulation, heat insulation, sound insulation, and more decorative. Adopting of medium-density boards imported from the US, the inner doors are finely patterned on the surface, decorous style and more decorative. Adapting range: Besides being used as household theft-proof doors and inner doors, the products can be used in villas, hotels, apartments, office buildings as well as computer rooms, confidential rooms, thermostatic rooms, etc.