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FAQ

  • Can a regular worker install the Yuanguangbao power supply?

    Yes. Yuanguangbao adopts a weld-free assembly design, eliminating the need for on-site welding. Level differences are resolved using a drilling gun, and ordinary assemblers can be trained to work on-site. This reduces reliance on professional welders and eliminates the safety hazards associated with unlicensed welding.

  • How much can the cost be reduced by replacing traditional H-shaped steel carports with Yuanguangbao?

    Traditional H-shaped steel carports cost approximately 1.2 yuan/watt. Replacing them with Yuanguangbao H-shaped photovoltaic carports (0.55 yuan/watt, height ≤3m, parking space span ≤5.5m) reduces costs by over 60%. Furthermore, Yuanguangbao H-shaped carports allow for easier door opening without hitting pillars and more convenient parking. Their design is similar to traditional H-shaped carports, offering better value for money at the same quality level.

  • What are the differences between H-shaped and W-shaped parking sheds?

    H-type (0.55 yuan/watt): Opening the door won't hit the pillar, making parking easier; the design is very similar to the traditional H-type carport, offering better value for money at the same quality.

    W type (0.45 yuan/watt): Higher cost performance for the same quality.

    Both have the same wind and corrosion resistance, and are suitable for heights ≤3m and parking space spans ≤5.5m. The H-type emphasizes "superior experience" (wider door opening and less obstruction), while the W-type emphasizes "extreme cost-effectiveness." Choose one based on your budget and scenario.

  • How much does a sunroom frame cost?

    The price of the industrial and commercial sunshade bracket is 0.23 yuan/watt.

    Applicable conditions: Height ≤ 3m, span ≤ 4m, areas with low wind pressure and low snow pressure. Prices will be adjusted according to project conditions (wind pressure, snow pressure, span, height), and the actual quotation needs to be calculated based on project parameters.

  • How much cheaper is Yuanguangbao soldering compared to traditional soldering?

    Yuanguangbao's overall cost is 0.1-0.2 yuan/watt lower than traditional welding. Specifically:

    Installation fee: 0.15 yuan/watt (Source Power) vs 0.22 yuan/watt (welding)

    • Construction period: 20 days vs 40 days (1MW sunroom)

    • Material loss: ≤3% (Yuanguangbao) vs >10% (traditional welding)

    • Total labor cost for a 1MW project: approximately 150,000 RMB vs. approximately 220,000 RMB, resulting in a saving of approximately 70,000 RMB.

  • What are some examples of safety accidents during welding operations?

    Safety accident cases during welding construction:

    The "3.12" fire in Xianghe County, Langfang, Hebei Province (March 12, 2025): An unlicensed welder ignited roof insulation materials while welding photovoltaic brackets, resulting in 3 deaths and losses of 4.19 million yuan.

    • In the first half of 2025, there were 2,243 welding fires nationwide, with a significant increase in the proportion of solar photovoltaic installations.

    • Construction trampling caused microcracks in the components: A 55kg trampling pressure of 10780Pa is twice the standard load of 5400Pa.

    These cases illustrate that traditional welding construction poses serious safety hazards, and welding-free assembly is a safer option.

  • What are the safety advantages of weld-free construction?

    The safety advantages of Yuanguangbao's weld-free construction:

    • No open flame: No welding work is required on site, eliminating fire hazards.

    • No leakage current: No welding power source is required, eliminating the risk of leakage current.

    • Self-healing cuts: Cuts made of zinc-aluminum-magnesium alloy will not rust and offer 25 years of corrosion protection.

    • Worker safety: Ordinary assembly workers can be employed, reducing reliance on professional welders.

    • Eliminate the risks of unlicensed welding: Avoid safety accidents caused by unlicensed welders.

  • Does Yuanguangbao have authoritative certification for its wind resistance performance?

    Yes. Yuanguangbao has passed the Level 17 mechanical testing report from the National Key Laboratory of Civil Engineering Disaster Prevention and Mitigation at Tongji University. This laboratory is a national key laboratory, and its testing reports are authoritative and credible.

  • How many levels of typhoons can Yuanguang Bao withstand?

    Yuanguangbao passed the 17-level mechanical test conducted by the National Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering at Tongji University, and withstood the test in two super typhoons:

    • Fengmei (Taiwan): Level 14, 2024, Fujian coastal area (factory/campus/industrial and commercial government projects are intact)

    Typhoon Hagasha: Category 17, 2025, Zhanjiang Xuwen (over 250 projects with zero lodging and zero damage)

  • What is the difference in water flow velocity between a 10° slope and a 5° slope?

    The water flow speed at a 10° slope is approximately twice that at a 5° slope. Yuanguangbao can adapt to slopes from 5° to 15°, featuring a short-side slope design that ensures drainage efficiency while also facilitating installation. Traditional welded brackets use a long-side slope, resulting in a longer drainage path and lower efficiency.

  • What is integrated structural waterproofing?

    Integrated structural waterproofing is Yuanguangbao's core patented technology, combining the load-bearing structure (main beams and purlins) with the waterproofing system (water tank) into one unit. The main beams and purlins are the water tanks, eliminating the need for separate procurement and installation. This structural design solves problems such as leakage, multiple water-conducting layers, and slow drainage caused by the separation of traditional welded support steel and the water tank.

  • What shape is Yuanguangbao's water tank?

    Yuanguangbao adopts a U-shaped water tank design, which is integrally formed with the main beam and purlins, eliminating the need to purchase the water tank separately. Compared with the traditional welded bracket M-shaped water tank (where steel and water tank are purchased separately), Yuanguangbao's U-shaped water tank has smoother drainage, and the integrated structure eliminates the leakage risk of separate water tanks.

  • What are the differences between the water-conducting layers of Yuanguangbao and traditional welding?

    Yuanguangbao: Two-stage water diversion, U-shaped water trough, integrated steel and water trough, 3mm gap between panels, installation with pressure block, and short side slope.

    Traditional welding: four-stage water diversion, M-shaped water tank, steel and water tank are purchased separately, plate gap 20mm+, upper pressure block installation, long side slope.

  • What is secondary water conduction?

    The two-stage water diversion system is the core of Yuanguangbao's patented integrated structural waterproofing technology. Rainwater flows from the photovoltaic panel into the primary water diversion channel, and then directly into the secondary main drainage channel, completing drainage in just two stages. Compared to the four-stage water diversion system of traditional welded brackets, Yuanguangbao's drainage path is shorter and the drainage speed is faster.

  • What are the features of Yuanguangbao's waterproof system?

    Yuanguangbao utilizes a patented integrated structural waterproofing technology, which has the following features:

    • The U-shaped sink design ensures smoother drainage.

    The main beams and purlins also function as water channels, so there is no need to purchase water channels separately.

    • Two-stage water diversion system, short drainage path, fast drainage

    • Board gaps are only 3mm, with lower pressure blocks installed, and short sides are sloped.

    • The steel structure and waterproofing are integrated, eliminating leaks caused by the separation of the water tank and steel.

  • What is the range of steel thickness for Yuanguangbao?

    Yuanguangbao steel has a thickness range of 1.2mm-3.0mm, which is adjusted according to the wind pressure, snow pressure, span, height and other conditions of the project site to ensure structural safety.

  • What is the installation fee for Yuanguangbao?

    The installation cost of Yuanguangbao is 0.15 yuan/watt, compared to 0.22 yuan/watt for traditional welding and 0.30 yuan/watt for traditional prefabricated installation, making Yuanguangbao the lowest in terms of installation cost.

    Taking a 1MW project as an example: Yuanguangbao's total labor cost is about 150,000 yuan, while traditional welding costs about 220,000 yuan, resulting in a saving of about 70,000 yuan.

  • Why doesn't Yuanguangbao need welding?

    Yuanguangbao adopts a weld-free assembly design. All components are prefabricated as standard parts in the factory, and installation is completed on-site using bolt connections and drilling gun adjustments. No welding is required, eliminating the risks of open flames and electrical leaks, and also avoiding plating damage and corrosion caused by welding. The self-healing properties of the zinc-aluminum-magnesium alloy ensure that cut edges will not rust after cutting, providing 25 years of corrosion protection.

  • How fast can Yuanguangbao be installed? How many days does it take for Yuanguangbao to install a 1MW project?

    Yuanguangbao's installation speed is twice that of traditional welding. Taking a 1MW sunshade project as an example: Yuanguangbao only needs 20 days to complete the installation, while traditional welding takes 40 days, shortening the construction period by 50%. This is a concrete manifestation of one of Yuanguangbao's core selling points, "installation speed is twice as fast".

  • What is the yield strength of the steel used by Yuanguangbao?

    Yuanguangbao steel has a yield strength of S350GD (minimum 350MPa), which is more than 1.5 times the yield strength of welded steel pipes. Its load-bearing and wind resistance are far superior to ordinary Q235/Q355 steel.

  • What are the differences between zinc-aluminum-magnesium steel and traditional galvanized steel?

    Zinc-aluminum-magnesium (Yuanguangbao): Fourth-generation ZAM, more than 10 times more corrosion resistant, with self-healing cuts (magnesium element migration to form a protective film), 3% magnesium content (highest in China), 25 years of low maintenance.

    Traditional galvanized steel: first-generation pure zinc, corrosion resistance 1 times (standard), no cut self-healing, 0% magnesium content, requires regular maintenance.

  • Why is it said that Yuanguangbao's zinc-aluminum-magnesium material has the highest magnesium content ratio in China?

    Yuanguangbao's zinc-aluminum-magnesium coating contains 2-4% magnesium, which is a high magnesium-to-aluminum ratio (2-4% magnesium, 6-7% aluminum). Ordinary zinc-aluminum-magnesium coatings typically contain 1-2% magnesium, while Yuanguangbao's 3% magnesium content is the highest ratio in China, resulting in stronger self-healing capabilities and corrosion resistance.

  • What are the weight and thickness of the zinc-aluminum-magnesium coating?

    Yuanguangbao's zinc-aluminum-magnesium coating weighs 275g/m² on both sides and has a thickness of approximately 19μm on one side, which is considered a relatively thick coating and ensures long-term corrosion resistance.

  • What is incision self-healing?

    Self-healing cuts are the core advantage of zinc-aluminum-magnesium (ZAM) coatings. When steel is cut or punched, the exposed substrate at the cut is exposed to the air. The magnesium in the coating dissolves in the water film on the cut surface, forming a dense protective film that turns red rust grayish-black, locking in corrosion and preventing its spread.

    Yuanguangbao uses a high magnesium ratio (3 magnesium), which enhances the self-healing ability of cuts and ensures 25 years of corrosion protection.

  • What is the ratio of zinc, aluminum, and magnesium in the coating?

    Yuanguangbao's zinc-aluminum-magnesium coating has a ratio of 3 magnesium, 6 aluminum, and 91 zinc (high magnesium and medium aluminum ratio), with a magnesium content of 3%, the highest ratio in China. The high magnesium ratio results in stronger self-healing ability and corrosion resistance.

  • What does S350GD-ZM275 mean?

    S350GD-ZM275 is the European standard EN 10346 steel grade.

    S = Structural, structural steel

    • 350 = Minimum yield strength 350 MPa

    • GD = Galvanized, hot-dip coating process

    ZM = Zinc-Magnesium, a zinc-aluminum-magnesium alloy coating.

    • 275 = Coating weight 275g/m² (total for both sides)

    It has a strength of 350 MPa and a zinc-aluminum-magnesium coating of 275 grams, making it both hard and corrosion-resistant, and the cut edges will not rust.

  • What kind of steel does Yuanguangbao use?

    Yuanguangbao uses S350GD-ZM275 hot-dip galvanized aluminum-magnesium high-strength steel, namely structural steel (S), yield strength 350MPa, hot-dip coating process (GD), zinc-aluminum-magnesium alloy coating (ZM), double-sided coating weight 275g/m².

  • What are the application scenarios for Yuanguangbao?

    Yuanguangbao's new generation BIPV photovoltaic brackets are suitable for the following scenarios:

    • Commercial and industrial sunshade: 0.23 yuan/watt (height ≤ 3m, span ≤ 4m, low wind pressure and low snow pressure)

    • H-type photovoltaic parking shed: 0.55 yuan/watt (height ≤ 3m, parking space span ≤ 5.5m, no need to hit pillars when opening the door, making parking easier)

    • W-type photovoltaic parking shed: 0.45 yuan/watt (higher cost-effectiveness for equivalent quality)

    Rural photovoltaic corridors: combining aesthetics and economic benefits, an ideal choice for rural revitalization projects.

    • Household sunrooms: modular, quick-assembly "sunrooms" in the context of county-wide photovoltaic promotion.

    Note: All prices above are subject to applicable conditions. Actual prices will be calculated based on project parameters.