About SINOJ
SinoJ International Trade (Tianjin) Co., Ltd.
SinoJ International Trade (Tianjin) Co., Ltd. is a subsidiary of the Photovoltaic Foreign Trade Division of Xiushui Pipe Manufacturing Co., Ltd., strategically located in Datun Industrial Park, Jinghai District, Tianjin, China.
We integrate R&D, design, production, and sales of PV mounting systems, offering one-stop total solutions for PV projects. With over 10 years of industry experience, we focus on customized designs that balance cost control with power output efficiency. Our team provides full lifecycle support — from proposal and design to after-sales service. All our PV mounting systems and accessories come with a 20+ year quality guarantee.
Our 30,000+ m² factory is equipped with a professional R&D team and 20 automated production lines. We also leverage the extensive experience of our parent company, Tianjin Xiushui Pipe Manufacturing Co., Ltd. (founded 2007), in steel pipe manufacturing and the new energy sector. Guided by our philosophy — “Development is the Direction, Action is the Truth” — SinoJ holds international certifications including ISO9001, ISO14001, ISO45001, ISO50001, CE, and RoHS. All products have passed strict testing by authoritative institutions, ensuring reliable performance and compliance with global standards.
Why Choose Us
Engineering, Scale, Quality & Lifecycle Service – All Under One Roof.
Experienced & leading R&D
Established in 2007 with in-house engineering team, advanced structural analysis.
Large-scale manufacturing & facility
Annual output of 600,000 tons, plant area of over 30,000 m², fully automated production lines, and stable raw material supply from top-tier mills.
Strict quality control & global certifications
Certificates such as ISO, CE, RoHS, etc. 25-year corrosion resistance with salt spray testing.
Full lifecycle service
From free structural design and rapid quotation to installation guidance and long-term warranty (25 years.)
Secure Packaging & Fast Shipment
International standard packing for safe transport
Only 40 km from Tianjin Port – fast shipment
Warehouse racks filled with finished solar mounting brackets
Rows of palletized solar brackets in warehouse ready-to-ship zone
Ready-to-ship pallet with corner protectors and edge guards
Solar rail and clamps packed in carton
Palletized solar mounting kits with stretch wrap and shipping label
Truck leaving warehouse after loading
Forklift positioning palletized PV brackets inside shipping container
Loading process inside container – pallets arranged tightly for max volume
Certifications & Qualifications
Our certifications reflect a commitment to standardized production, reliable quality control, workplace safety, and international compliance for solar PV bracket manufacturing.
ce certificate
ISO50001-certificate
ISO45001-certificate
ISO14001-certificate
ISO9001-certificate
Invention Patent certificate
Utility Model Patent certificate
Utility Model-Patent certificate
Production process
From Raw Materials to Global Delivery
Step 1
Raw Materials
Select high-strength steel coils; test chemical & mechanical properties upon arrival.
Step 2
Processing
Processed through multiple steps, including forming, cutting, and drilling.
Step 3
Quality Inspection
Each product undergoes multiple rounds of quality inspection to ensure quality.
Step 4
Packaging
International standard packaging makes transportation more convenient.
Step 5
Shipping
Only 40 km from Tianjin Port – fast shipping speed.
Exhibitions
We actively participate in industry exhibitions to showcase our solar PV bracket solutions, manufacturing capabilities, and quality control standards. Through face-to-face communication with global customers, we better understand project requirements, build long-term partnerships, and provide reliable support for international solar mounting projects.
International Solar-Plus-Storage Utilization Conference, Jinan, China
International Solar Photovoltaic Exhibition, Guangzhou, China
China Import and Export Fair,Guangzhou, China
SNEC PV Power Expo, Shanghai, China
International Solar Photovoltaic & Energy Storage Industry Expo,Zhengzhou,China
Solar PV World Expo, Guangzhou, China
Manufacturing equipment
We actively participate in industry exhibitions to showcase our solar PV bracket solutions, manufacturing capabilities, and quality control standards. Through face-to-face communication with global customers, we better understand project requirements, build long-term partnerships, and provide reliable support for international solar mounting projects.
Forming Machine
Hydraulic press
Punching Machine
Stamping Press
Film Laminating Machine
Cold Roll Forming Machine
Cold Roll Forming Machine
Flying Cut-off Machine
Quality Sourced
Partnering with industry-leading material suppliers.
