Zhejiang Longtrend Industrial Co., Ltd., with former name of Yongkang Longtrade Doors Industry Co., Ltd., is a modern enterprise mainly specializing in designing, manufacturing and selling top-class steel security doors. We have been a professional manufacturer collecting the production, trading and service for 10 years. With the geographical advantage of China's Hardware City of Yongkang, we have unique opportunity in material purchasing, craft processing and quality inspection, which far exceed our competitors. Doors produced in our factory are ideally suited to the climatic condition...