Vietnam Tightens Structural Adhesives Import Rules

On May 17, 2026, the Ministry of Industry and Trade of Vietnam (MOIT) issued Circular No. 32/2026/TT-BCT, imposing immediate, enhanced inspection requirements on imported structural adhesives. The move reflects growing regulatory focus on long-term durability performance in construction and automotive applications — sectors where adhesive failure under tropical climatic stress poses significant safety and liability risks.

Event Overview

Effective immediately from May 17, 2026, MOIT mandates that all imported structural adhesives comply not only with ISO 21872:2026 but also with a new compulsory test: retention of shear strength ≥85% after 96 hours of humid-heat cycling followed by 72 hours of recovery. This test must be conducted by the manufacturer’s accredited laboratory prior to shipment and independently verified by a Vietnamese-recognized laboratory (e.g., QUATEST 3).

Industries Affected

Direct Exporters & Trading Firms: Chinese and other third-country exporters face increased pre-shipment lead time and cost due to dual testing (in-house + QUATEST 3). Certificate-of-conformance delays may trigger customs hold-ups or rejection at Ho Chi Minh City or Hai Phong ports. Notably, firms without existing MOIT-recognized test partnerships will require minimum 4–6 weeks to establish verification pathways.

Raw Material Suppliers: Manufacturers of base resins (e.g., epoxy, polyurethane, acrylic), toughening agents, and humidity-stable curing systems are seeing renewed technical inquiries — particularly regarding hydrolytic stability and plasticizer migration resistance. Demand for pre-qualified ‘wet-heat-ready’ formulations is rising, though no standardized material-level benchmark yet exists.

Downstream Formulators & OEMs: Local Vietnamese adhesive blenders and assembly plants (especially in automotive glazing and façade engineering) must now validate incoming batches against the new retention threshold — adding strain to QA capacity. Some are temporarily pausing procurement of non-certified stock to avoid rework or warranty exposure.

Supply Chain Service Providers: Customs brokers, conformity assessment consultants, and lab coordination platforms report surging requests for MOIT circular interpretation, test scheduling support, and documentation alignment (e.g., translating Vietnamese-language test reports into English for exporter audits). Lead times for QUATEST 3 validation slots have extended to 10–14 business days.

Key Points for Stakeholders to Monitor & Act On

Verify Lab Recognition Status Before Submission

Not all internationally accredited labs are accepted by MOIT. Exporters must confirm whether their current testing partner appears on the official list maintained by QUATEST 3 or the General Department of Vietnam Standards and Quality (TCVN). Unrecognized reports will not satisfy the mandatory verification requirement.

Review Test Protocols for Humid-Heat Cycling Parameters

The circular specifies 96 h at 85°C / 85% RH — stricter than common IEC 60068-2-30 or ASTM D2247 conditions. Manufacturers should cross-check chamber calibration logs, dew-point control accuracy, and post-cycle conditioning environments (23°C ±2°C, 50% RH ±5%) to ensure reproducibility.

Update Technical Documentation Packages

MOIT now requires full test records — including raw data sheets, equipment calibration certificates, and operator sign-offs — to accompany each shipment. Digital submission via the National Single Window (NSW) system is mandatory; paper-only submissions are rejected.

Editorial Perspective / Industry Observation

Analysis shows this amendment is not an isolated tightening but part of a broader regional trend: Thailand (TISI), Indonesia (BSN), and Malaysia (SIRIM) are drafting similar durability-based adhesive criteria for 2027–2028 implementation. Observably, Vietnam’s choice of 85% retention as the pass threshold suggests alignment with ASEAN harmonization efforts rather than unilateral protectionism. From an industry perspective, the requirement better reflects real-world service life expectations in tropical infrastructure — especially for curtain wall systems exposed to monsoon cycles. However, the absence of transitional provisions or grandfathering clauses increases near-term compliance friction for legacy products already in distribution channels.

Conclusion

This regulation marks a substantive shift from dimensional or basic performance compliance toward climate-resilient functional assurance. It signals that emerging-market regulators are increasingly prioritizing field-relevant durability metrics over laboratory-only benchmarks — a development with implications beyond adhesives, extending to sealants, coatings, and composite bonding systems. For global suppliers, adapting early is less about avoiding disruption and more about positioning for next-generation specifications across Southeast Asia.

Source Attribution

Official text: Vietnam Ministry of Industry and Trade (MOIT), Circular No. 32/2026/TT-BCT, effective May 17, 2026. Available at https://moit.gov.vn/van-ban-phap-quyen.
Recognition list of approved laboratories: QUATEST 3 Technical Bulletin No. QT3-TB-2026-04 (updated weekly; subject to revision).
Ongoing items for observation: potential extension to non-structural adhesives, possible adoption of accelerated aging protocols (e.g., UV + humidity cycling), and MOIT’s planned stakeholder consultation on transition timelines scheduled for Q3 2026.