Cheng Long Industrial Co. Ltd. Weifang City - China

The company is a security door-Series production, inStallation, construction, and sales of integrated businesses, products, registered as a huge blessing trademark. Under three factories, the production of 60,000 security doors. Products from Shandong Province Construction Machinery Supervision and Inspection Center of Technical Supervision record, and the Shandong Provincial Public Security Department organized experts and producers. Products from Design to the use of performance is always the same industry-leading position.