2026 Shanghai PV Expo Spotlights Epoxy, Silicone

On June 3, 2026, the 2026 International Solar Photovoltaic Exhibition in Shanghai opened with structural epoxy and silicone sealants drawing attention as weather-resistant encapsulation materials for photovoltaic power stations, as a draft update to IEC TS 63209-2 may raise technical qualification requirements for auxiliary photovoltaic materials.

Confirmed Updates from the Shanghai PV Exhibition

According to the provided event summary, the exhibition opened on June 3, 2026. During the event, structural epoxy and silicone sealants were identified by multiple leading inverter and energy storage cabinet manufacturers as core materials for next-generation IP68+UV10000h weather-resistant encapsulation.

The information disclosed at the exhibition also stated that the draft of IEC TS 63209-2 has incorporated dual 85 plus ultraviolet compound aging test requirements. The draft is expected to be finalized in the third quarter of 2026.

The confirmed information indicates that the potential standard update is directly connected with encapsulation durability, weather resistance, and procurement qualification requirements for photovoltaic auxiliary materials.

Where the Standard Shift May Affect the Value Chain

Direct trading companies facing specification-led procurement

From an industry perspective, direct trading companies may be affected because buyers of photovoltaic auxiliary materials could place greater emphasis on whether structural epoxy and silicone sealants can support IP68+UV10000h encapsulation requirements and aging-test expectations under the IEC TS 63209-2 draft.

The impact may appear in product selection, quotation preparation, technical documentation, and customer communication. Trading companies may need to follow changes in procurement specifications, clarify whether supplied materials match updated testing language, and avoid relying only on general product descriptions.

Raw material buyers under tighter durability review

Raw material procurement enterprises may be affected because compound aging requirements can increase attention on material stability, weather resistance, and batch consistency. If downstream manufacturers begin referencing the draft requirements in sourcing decisions, raw material selection may become more closely tied to long-term performance verification.

Relevant business links include supplier screening, incoming material review, formulation support, and technical document collection. Companies may need to track whether suppliers can provide test reports, traceability records, and compatibility information related to structural epoxy and silicone sealants.

Processing manufacturers aligning production with test expectations

Processing and manufacturing companies may face pressure because encapsulation performance is not determined only by the adhesive or sealant itself, but also by process control, curing conditions, interface preparation, and assembly consistency. The draft testing direction may therefore influence manufacturing validation and quality control procedures.

Potentially affected areas include production process documentation, sample preparation, reliability testing, technical bid alignment, and after-sales quality analysis. Manufacturers may need to review whether existing process parameters can support the performance expectations associated with IP68+UV10000h weather-resistant encapsulation.

Supply chain service providers managing compliance evidence

Supply chain service companies may be affected because standard-related procurement requirements often create demand for documentation coordination, inspection scheduling, warehousing segregation, and delivery traceability. When buyers ask for clearer evidence of material conformity, service providers may need to support more structured compliance workflows.

Areas requiring attention include supplier qualification files, shipment documentation, batch records, testing report management, and communication between material suppliers and photovoltaic equipment manufacturers.

Practical Priorities for Companies Before Finalization

Review certification and compliance evidence early

Companies involved in photovoltaic encapsulation materials should review whether current certification files, test reports, and technical specifications clearly address weather resistance, ingress protection relevance, ultraviolet aging, and compound aging requirements. This does not mean the final standard is already in force, but it suggests that compliance evidence may become more important in procurement review.

Prepare material and process data for technical tenders

Because structural epoxy and silicone sealants were highlighted as core materials for next-generation encapsulation, enterprises may need to prepare more detailed technical tender documents. Useful materials may include product performance descriptions, application conditions, aging-test references, compatibility notes, and quality traceability information.

Reassess supplier qualification for key encapsulation materials

Supplier management may need closer attention. If buyers begin to reference IP68+UV10000h and the IEC TS 63209-2 draft in procurement language, suppliers that cannot provide stable documentation or clear test support may face greater difficulty in qualification reviews.

Plan procurement and delivery around possible Q3 changes

The provided summary states that the draft is expected to be finalized in the third quarter of 2026. Companies may therefore need to monitor lead times for testing, sample validation, documentation updates, and contract specification adjustments, especially where photovoltaic equipment delivery schedules are tied to project installation timelines.

Industry Reading: A Material Standard Is Becoming a Buying Rule

Analysis shows that the significance of this event lies not only in the materials being discussed, but also in the way a technical specification may influence procurement behavior. When compound aging requirements enter a draft standard, buyers may translate them into qualification thresholds for encapsulation materials.

From an industry perspective, this could make weather-resistant encapsulation a more visible part of the purchasing process for photovoltaic inverters, energy storage cabinets, and related power station components. It is more appropriate to understand this as a possible shift from performance claims toward evidence-based material selection.

What deserves closer attention is the preparation cycle. Testing, technical bid alignment, supplier qualification, and quality traceability usually require coordination across research, procurement, manufacturing, and after-sales teams. Companies that wait until final procurement documents change may face tighter response windows.

Observably, the draft direction may also raise compliance costs for some suppliers, although the final impact will depend on the completed text of IEC TS 63209-2, how buyers interpret it, and how quickly tenders adopt the revised requirements.

Conclusion: A Watchpoint for PV Encapsulation Procurement

The opening of the 2026 Shanghai photovoltaic exhibition placed structural epoxy and silicone sealants at the center of discussion around durable power station encapsulation. The reported inclusion of dual 85 plus ultraviolet compound aging tests in the IEC TS 63209-2 draft gives the industry a clear signal to monitor technical qualification requirements more closely.

A rational conclusion is that companies should not overstate the impact before the standard is finalized, but they should begin reviewing documentation, supplier readiness, testing plans, and technical tender alignment. The final procurement effect will depend on the completed standard and its adoption by market participants.

Information Basis and Follow-Up Items

This article is generated based on the user-provided news title, event date, and event summary concerning the 2026 International Solar Photovoltaic Exhibition in Shanghai, structural epoxy, silicone sealants, IP68+UV10000h encapsulation materials, and the IEC TS 63209-2 draft.

Specific official source links were not provided in the input and should be verified continuously. For events of this type, relevant source categories may include official exhibition announcements, standardization documents, certification guidance, technical tender documents, and statements from participating industry organizations or manufacturers.

Items requiring continued observation include the final text of IEC TS 63209-2, certification implementation approaches, changes in tender specifications, supplier qualification requirements, testing report acceptance criteria, and market feedback from photovoltaic equipment manufacturers and auxiliary material suppliers.