Shenzhen Hao Sealing 2024 Annual Meeting: Review and Outlook

In the global wave of actively promoting clean energy transformation, solar energy, as an inexhaustible green energy source, is playing an increasingly critical role. To further advance the development and application of solar photovoltaic (PV) and energy storage technologies, the 18th Shanghai International Solar PV & Energy Storage Exhibition has grandly opened. This exhibition is not only an important platform for industry technical exchanges but also an excellent stage for enterprises to showcase innovative achievements and seek cooperation opportunities.

HaO Invites You to the 18th Shanghai International Solar PV & Energy Storage Exhibition

HaO, a leader in the sealing technology field, will make a brilliant appearance at this exhibition with booth number 2.1H-B01. We specialize in providing sealing solutions for the full range of PV equipment, committed to safeguarding the efficient and stable operation of PV equipment with our superior technology and products.

I. Challenges in PV Equipment Sealing

PV equipment is typically installed outdoors and must withstand various harsh environmental conditions. From intense ultraviolet radiation in scorching deserts to erosion by high humidity and salt spray in coastal areas; from sandstorms to freezing temperatures in severe cold regions—these extreme environmental factors all impose extremely high requirements on the sealing performance of PV equipment. Once sealing issues arise, such as UV aging causing seal cracks, coolant leakage triggering PID effects; salt spray corrosion leading to electrochemical corrosion of aluminum frames; sand intrusion causing rail jams and significant reductions in power generation efficiency; low-temperature embrittlement causing installation cracks; chemical swelling causing seal expansion and subsequent frame deformation, etc., they will seriously affect the performance and service life of PV equipment, increase maintenance costs, and reduce power generation benefits.

HaO Invites You to the 18th Shanghai International Solar PV & Energy Storage Exhibition

II. HaO's Full Range of Equipment Sealing Solutions

Relying on years of deep accumulation and continuous innovation in the field of sealing technology, HaO has launched comprehensive, customized sealing solutions for the full range of PV equipment, covering key components from PV module frames to inverters, junction boxes, tracking brackets, and more.

(I) Material Innovation, Laying the Foundation for Superior Sealing

1、High-Weatherability EPDM Rubber: For PV module frame seals, HaO uses high-weatherability EPDM rubber with ozone resistance exceeding 1000pphm, ensuring a service life of up to 25 years in harsh outdoor environments. Its unique formula incorporates a carbon black shielding layer and utilizes vapor-phase silica (SiO₂) to coat rubber molecular chains, forming a nano-shielding layer with UV transmittance below 0.1%, effectively resisting UV aging of the rubber. Meanwhile, it introduces a microencapsulated polybutadiene (particle size 5μm) self-repairing system that automatically releases repair agents when rubber cracks occur, significantly enhancing material durability.

2、Fluorosilicone Rubber (FVMQ): For inverter coolant pipe seals, HaO selects fluorosilicone rubber (FVMQ), which exhibits excellent resistance to ester-based coolants. After 1000 hours of immersion testing, its volume change rate (ΔV) is less than 3%, effectively preventing coolant leakage and avoiding a series of failures caused by coolant leakage, ensuring stable inverter operation.

3、Thermoplastic Elastomer (TPE-S): HaO uses TPE-S material for junction box waterproof seals, which features laser-weldable properties, improving assembly efficiency by 50% compared to traditional sealing methods. This not only enhances production efficiency but also ensures sealing reliability, effectively preventing moisture intrusion into junction boxes and safeguarding the safety and stability of electrical connections.

4、Conductive Silicone: For tracking bracket electronic control boxes, HaO has developed conductive silicone with a surface resistance of 10³Ω, effectively preventing static electricity accumulation. In complex outdoor environments, static electricity may interfere with the normal operation of electronic components in electronic control boxes or even cause malfunctions. The application of conductive silicone provides reliable electrostatic protection for tracking bracket electronic control boxes, ensuring their stable operation.

(II) Structural Design, Adapting to Diverse Application Scenarios

1、Hollow Airbag Sealing Structure: For dual-glass module frames, HaO has designed a hollow airbag sealing structure. This structure features pneumatic self-adaptation, with installation speed three times faster than traditional sealing methods, while effectively reducing component hidden crack rates by 60%. During installation, the airbag can automatically adjust air pressure according to the actual conditions of the frame, ensuring tight sealing and avoiding component damage caused by improper installation.

2、Double-Lip Oil Seal with Oil Reservoir: The rotating shaft parts of tracking brackets require frequent rotation, imposing high requirements on sealing and lubrication. HaO's double-lip oil seal with oil reservoir structure not only effectively prevents dust, moisture, and other impurities from intruding but also continuously lubricates the rotating shaft through the oil reservoir, extending the maintenance cycle from 1 year to 5 years, significantly reducing maintenance costs and improving equipment operational reliability.

3、Thermal Conductive Gasket: String inverters generate a large amount of heat during operation. If not dissipated in a timely manner, it will affect their performance and lifespan. HaO's thermal conductive gasket has a thermal conductivity as high as 3W/m·K, effectively conducting heat generated by the inverter and reducing temperature by 15℃, thereby extending inverter lifespan by 30%. Meanwhile, this gasket also offers excellent sealing performance, preventing dust and moisture from entering the inverter.

4、Closed-Cell Foamed EPDM Float Sealing: For floating power station floats, HaO uses closed-cell foamed EPDM material with a density of 0.6g/cm³, providing 20% higher buoyancy and 35% lower cost compared to traditional materials. This material has excellent waterproof performance, effectively preventing moisture intrusion into floats and ensuring the safe and stable operation of floating power stations in complex water environments.

(III) Intelligent Manufacturing, Ensuring Product Quality and Delivery Efficiency

Full-Process Quality Control: HaO has established a strict full-process quality control system, with precise control over every link from raw material mixing to product molding. During the mixing stage, temperature closed-loop control of the internal mixer ensures Mooney viscosity deviation within ±3% and impurity content below 200ppm; during mold pressing and vulcanization, vacuum plate vulcanizers are used to control temperature within ±1℃ and pressure within ±0.2MPa, ensuring uniform product vulcanization and impurity content below 100ppm; during online inspection, 3D machine vision and AI defect recognition technology are employed to achieve dimensional tolerance control within ±0.05mm and a defect rate below 10ppm, ensuring every product meets high-quality standards.

Rapid Response Delivery System: To meet customers' urgent needs, HaO has built a rapid response delivery system. Through modular mold design, it can switch seal ring cross-section types within 1 hour, supporting the production of over 2000 product specifications. Meanwhile, distributed production bases have been established globally, such as satellite factories near desert power stations, achieving 72-hour delivery and ensuring the smooth progress of customer projects, reducing construction delays caused by material waiting.

HaO Invites You to the 18th Shanghai International Solar PV & Energy Storage Exhibition

III. Customized Services to Meet Different Customer Needs

HaO understands that different PV projects have varying environmental and application requirements, and therefore provides customized sealing solutions. Whether it is the anti-sand dust demand of desert power stations, achieved through ultra-hard TPV seals combined with self-cleaning coatings that reduce cleaning robot power consumption by 40%; or the anti-biofouling demand of offshore floating power stations, using silicone seals containing antifouling agents that reduce maintenance costs by US$1,200 per megawatt per year; or the waterproof demand of BIPV (Building Integrated Photovoltaic) systems, utilizing structural adhesive integrated molding seals that reduce leakage rates to 0.01%; or the moisture barrier demand of perovskite modules, employing butyl rubber/metal composite edge seals with water vapor transmission rates below 5×10⁻⁴ g/m²·d, HaO can leverage its professional technical team to tailor-make the most suitable sealing solutions for customers, optimizing full-lifecycle costs.

IV. Sincerely Invite You to Visit and Explore the New Future of PV Sealing

The 18th Shanghai International Solar PV & Energy Storage Exhibition is an annual grand event for the PV industry. HaO sincerely invites friends from all walks of life to visit our booth 2.1H-B01. Here, you will personally experience the charm of HaO's full range of PV equipment sealing solutions, engage in in-depth exchanges with our professional technical team, jointly explore the innovation and development of PV sealing technologies, and携手共创 the bright future of the PV industry. Let HaO's sealing technology provide reliable protection for your PV projects, assisting you in achieving greater accomplishments in the field of clean energy.

HaO Invites You to the 18th Shanghai International Solar PV & Energy Storage Exhibition