山东正中门业有限公司.
13406621112
Shandong Zhengzhong Door Industry Co., Ltd. is mainly engaged in the production, installation, and after-sales service of a series of products including fireproof rolling shutter doors, smoke barriers, fireproof doors, fireproof windows, windproof rolling shutter doors, steel anti-theft doors, aluminum alloy doors, quick doors, stacking doors, industrial lifting doors, etc.
Zhengzhong Door Industry caters to the needs of different groups of global enterprises, users, and distributors, and fully considers the demands of different customers. Taking enterprise development as the clue and customer needs as the analysis method, it constructs a coherent and consistent service chain. We have designed a scientific and comprehensive service approach. Attentive service, do our best!
Craftsmanship and Quality Assurance
Years of experience in the industry
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23
2025.10
Six major issues that cannot be ignored in fireproof rolling shutter doors
2025-10-23Fireproof rolling shutter door is a type of fire prevention and insulation facility suitable for large openings in buildings, which plays a certain role in the design and installation technology of...
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22
2025.10
Standard specification for characteristics of inorganic fabric fireproof rolling shutter doors
2025-10-22Standard specification for characteristics of inorganic fabric fireproof rolling shutter doors - Made of inorganic fireproof fibers through special processing, it has fireproof, smoke proof, and he...
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21
2025.10
What is the function of a smoke barrier wall?
2025-10-21As a fire protection product, the main function of smoke barrier is to isolate smoke, insulate and prevent fire. So, how does it work when a fire strikes?
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17
2025.10
Inspection method for fireproof rolling shutter doors
2025-10-171. Visually inspect whether the door rail and door leaf are deformed, blocked, and whether the manual button is locked properly.2. Check if the electrical control box of the rolling shutter door ha...
