Find high quality fifth- steel door with competitive price here. Please rest assured to buy fifth- steel door with CTN Refrigeration Equipment Limited

First of all, at the time of purchase of security doors, dealer operations eligible for certification, operator technical security management, Public Security Bureau issued "security certification". 

Second, pay attention to carefully check, qualified security door doorframe plate thickness should be above 2mm, door thickness above 20mm, the weight of the door above 40kg.