Dingrui Yongcheng Construction Engineering Co., Ltd is a large-scale company which specializes in designing, manufacturing and installing all kinds of steel structure projects.

Shanghai Jiuku Steel Structure Co., Ltd.

Qingdao Voltor Door is a professional manufacturer of steel and aluminum roller doors, sectional garage doors, industrial doors, and high-speed doors. Our factory is located in Qingdao, just a one-hour drive from the world's 6th largest port, providing convenient access to sea transportation. With over 10 years of experience in the industry, we d provide OEM services to many companies across the EU, US, and Oceania. Our advanced production lines are backed by ISO9001 certification, and we adhere to strict quality control procedures to ensure that our products meet the highest standards. We welcome your inquiries or visits and look forward to building a long-term, win-win partnership with you. In the early years, we focused on mastering the art of manufacturing basic yet reliable rolling doors. Since its inception, the company has been on a remarkable journey of growth and innovation. Starting as a small local business, we dedicated ourselves to understanding the unique needs of our customers and the challenges faced by different industries when it came to access solutions. Our commitment to quality craftsmanship and attention to detail quickly earned us a reputation for delivering products that outperformed the competition. As the demand for our products grew, we expanded our production facilities and invested in advanced manufacturing technologies. In the commercial sector, efficiency and security are paramount. Our commercial rolling doors are engineered to meet these demands. For high - traffic areas like retail stores and warehouses, we provide high - speed rolling doors. These doors can open and close rapidly, minimizing downtime and improving the flow of goods and people.

YIWU YUANBO STEEL STRUCTURE Co., Ltd is YUANBO INDUSTRIAL AND TRADING Co., LTD'S subsidary company. Our company located in yiwu China commodity city and we are a professional steel construction company, assembling design, production and installation. Our factory covers an area of 50 acre, with workshop of 35000 square meters, owning more than 20million yuan professional processing equipment and more than 50 million yuan fixed assets. We has already developed into three professional steel structure production line. Our company has much experience and professional technology in producing all kinds of light steel structure parts, such as type h, c, z steel, pressure plate, sandwich plate, floor plate etc. Our products are widely used in large plants, warehouse, coliseum, villa, office house, toll station, cold storage and additional layer of flattened. Our philosophy is say "quality is life, service is soul", your satisfaction is guaranteed. We encouraged our wholesale customers to telephone us or send email to us in order to take advantage of the latest discounted prices or products available. We insist on the belief of "pursue perfect, faith first", and wish to cooperate with all our friends from domestic and abroad!