YOUR STEEL STRUCTURE ENGINEERING EXPERT
We are a steel structure fabricator and EPC contractor based in Jining, Shandong, China, with 17 years of experience since 2009 and delivered projects in 60+ countries. Shandong Shijie Heavy Industry Co., Ltd. and its sister company, Henan Hengfeng Steel Structure Engineering Co., Ltd., operate as one manufacturing group under the same ultimate ownership. SynJect is the group’s export brand.
Warehouse Roof With Transparent Sunlight Panels
As a translucent roofing panel specifically designed for warehouse roofs, this product is manufactured from high-performance materials and offers advantages such as high light transmittance, weather resistance, and high impact strength. It is engineered specifically for warehouse roofing applications. The product is easy to install and highly waterproof. It effectively introduces natural light, improving the interior lighting environment of warehouses and reducing daytime electricity consumption. At the same time, it withstands external elements such as wind, rain, and UV radiation, ensuring a long service life. It is the ideal specialized building material for both retrofitting and new construction projects involving warehouse roofing.

Special Building Material: Light-Transmitting Panels for Warehouse Roofs
Core Features & Advantages
This series of transparent daylighting panels is specially designed for warehouse roofs, with excellent light transmission, weather resistance and structural strength. It can effectively introduce natural light into the warehouse, reduce daytime lighting energy consumption, and at the same time resist wind, rain, ultraviolet and other external erosion, ensuring long-term stable use without yellowing or cracking. Light weight and easy to install, it is very suitable for large-area roofing construction of various storage and logistics buildings.
♦ High light transmittance, soft and uniform daylighting, effectively reducing indoor lighting costs
♦ Strong anti-UV and anti-aging performance, long service life
♦ High impact resistance and load-bearing capacity
♦ Light material, easy to cut and install
♦ Good weather resistance, waterproof and windproof, adapt to long-term outdoor harsh environment
Applications
The light-transmitting daylighting panels are widely used for warehouse roofs, logistics centers, factory daylighting belts and large-span storage buildings. They can be perfectly matched with steel structure roofs, providing stable and sufficient natural lighting for the interior space. With excellent weather resistance and safety performance, they are suitable for new construction, renovation and energy-saving upgrading projects of various storage buildings, ensuring long-term reliable use in complex outdoor environments.
♦ Suitable for roof daylighting construction of various large warehouses and logistics distribution centers
♦ Applied to daylighting belts and daylighting skylights of industrial factory buildings
♦ Used for daylighting roof renovation of old storage buildings
♦ Perfect for large-span steel structure warehouse roof supporting materials
♦ Applicable to unloading canopies and passage canopies in logistics parks
Vision & Mission
We are committed to providing safe, efficient, and environmentally friendly solutions for global customers through continuous technological innovation and exceptional product quality, driving industry progress and collectively creating a better future.
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SHANDONG SHIJIE HEAVY INDUSTRY CO., LTD
Headquartered in the High-Tech Development Zone of Jining, Shandong Province, Shandong Shijie Heavy Industry Co., Ltd. and its sister company, Henan Hengfeng Steel Structure Engineering Co., Ltd., operate as a unified manufacturing group under the same ultimate ownership. Globally, we deliver our end-to-end solutions through our dedicated export brand, SynJect.
Drawing on 17 years of export expertise and a proven track record across more than 60 countries, we provide integrated EPC contracting and heavy fabrication. This global reach is backed by our robust manufacturing footprint: an 80,000 m² facility with an annual capacity exceeding 500,000 tons, RMB 120 million in registered capital, and a skilled workforce of over 600 professionals.
Our core expertise spans civil construction, petrochemical facilities, long-distance pressure pipelines, heavy steel structures, pressure vessels, and skid-mounted refueling stations.
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