Full-Service System: Pre-sales, In-sales & After-sales of Guojian (Tianjin) Iron and Steel Co., Ltd. We provide one-stop full-cycle supporting services for PV brackets, PV accessories, solar carports and steel structures, with exclusive project managers for both domestic and overseas clients.
1. Free consultation & product selectionWe recommend proper steel materials (hot-dip galvanized / zinc-aluminum-magnesium) and calculate material consumption based on wind/snow load, soil condition and rooftop structure of your solar projects.
2. Free site survey & structural calculationWe offer on-site survey for domestic large projects; for overseas clients, we complete mechanical load calculation and structural drawings according to your terrain & layout drawings, complying with global international standards.
3. Complete tender document supportFree supply of enterprise qualifications, patents, TUV/SGS/UL/CE test reports, project cases to help you finish bidding at home and abroad.
4. Sample supply & third-party testingWe provide free samples for salt spray, tensile strength and coating thickness inspection as required.
5. Cost optimization designWe optimize structural design to cut total procurement cost, with multiple quotation versions for your selection.
1. Dedicated project team for each orderSalesperson, structural engineer, production follower and logistics specialist are assigned to coordinate drawing revision, production schedule and technical adjustment.
2. Custom drawing deepeningWe deepen processing drawings according to PV module size, terrain and special requirements, and start production only after drawing confirmation.
3. Transparent production trackingWe send photos & videos of raw material inspection, cold roll forming, laser cutting, welding and anti-corrosion treatment during production; clients are welcome to supervise production in our factory.
4. Multi-stage factory inspectionWe conduct material test, dimension tolerance check, galvanizing thickness test and load sampling inspection before delivery, with official factory inspection reports attached.
5. Flexible logistics & export documents
● Domestic: Direct truck delivery to construction site, priority production for urgent orders;
● Overseas: Full customs clearance documents, CO, commercial invoice, packing list; FOB/CIF/DDP trade terms available, reinforced container packing & cargo insurance.
6. Classified packagingPV rails, clamps, bolts and ground screws are packed separately with detailed packing list for easy counting and installation.
1. 7×24 bilingual customer supportWe respond within 2 hours once receiving your inquiries, with remote video guidance for installation and troubleshooting.
2. Long-term warranty policy25-year anti-corrosion warranty for PV brackets, solar carports and main steel structures; 5-year warranty for fasteners & accessories. Free replacement for defective products caused by design or manufacturing flaws within warranty period.
3. Free installation technical guidanceWe send engineers to construction sites for key domestic projects; complete installation manuals, assembly videos and drawings are provided for overseas installers.
4. Regular follow-up visitsWe follow up 1 month, 6 months and 1 year after delivery, providing annual structural inspection & anti-corrosion maintenance suggestions for long-term partners.
5. Free replacement for damaged goodsWe resend deformed or scratched parts free of charge upon photo confirmation, and assist with cargo claim against logistics companies.
6. Lifelong paid technical serviceWe keep supplying customized steel components and structural renovation solutions after warranty expires with stable favorable prices.
1. One-stop full product supply: PV brackets, accessories, solar carports and steel structures in one supplier to save communication cost;
2. Dual-service for domestic & global markets: Familiar with domestic EPC tender rules and international certification, customs clearance standards;
3. Flexible production capacity: Fast delivery for standard stock, customized fabrication for small batches & special non-standard structures;
4. Professional technical team running through the whole project cycle, not only sales communication.
