GSO Certificate of Conformity: The UAE and Gulf Guide (2026)

A GSO certificate of conformity is the document that proves a product meets a Gulf technical regulation issued by the GCC Standardization Organization (GSO). For the product groups GSO regulates, that proof takes a specific form: the Gulf Conformity Marking, known as the G-mark, affixed to the product or its packaging (and/or its Declaration of Conformity), backed by a certificate registered in GSO's tracking system when a notified body is involved. In the UAE, two layers apply: the Gulf layer (GSO technical regulations and the G-mark) and the national layer (the UAE Conformity Assessment System, ECAS, run by MoIAT). A product can need either or both, depending on its category. This guide explains when each applies, which product groups are covered, and how the conformity assessment runs from testing to marking.

GSO is the GCC Standardization Organization, a regional standardization body established by resolution of the GCC Supreme Council at its 22nd session in Muscat (30 to 31 December 2001), operating since May 2004, with headquarters in Riyadh. Its member list on gso.org.sa covers the United Arab Emirates, the Kingdom of Bahrain, the Kingdom of Saudi Arabia, the State of Kuwait, the State of Qatar, the Sultanate of Oman and the Republic of Yemen, each represented by its national standardization body. The UAE's member body is the Ministry of Industry and Advanced Technology (MoIAT), which matters for importers because the same ministry administers the national ECAS certificates. GSO issues Gulf technical regulations for priority product categories, and its stated aim is to reduce technical barriers to trade and ease the movement of goods across GCC borders.

GSO's Board of Directors approved the Technical Regulation for Gulf Conformity Marking at its 10th meeting in Muscat on 24 May 2009. The marking, defined in the Gulf Regulation on G-Marking (BD09100501), is stuck on the product or its Declaration of Conformity (or both). GSO is explicit about what it is not: the marking is not a quality mark. It signifies that a product conforms at least to the essential requirements of health, safety and environment. Affixing it is compulsory for product categories that are the subject of GCC technical regulations, and GSO states that any product amenable to those regulations should bear the marking to be placed on GCC markets. Two practical duties follow: the applicable technical regulations must be recorded on the product label, and the certificate behind the marking must come from the conformity assessment procedure the relevant regulation prescribes.

GSO's conformity assessment scheme page lists the technical regulations approved for the Gulf Conformity Marking. General Product Safety (BD09100504) reaches consumer products broadly. Toys (2nd edition, BD-131704-01) restricts certain hazardous chemicals, sets noise limits and requires manufacturers to analyse the risks toys can cause. Low Voltage Electrical Equipment (BD-142004-01) adds electromagnetic compatibility requirements, with an accompanying list (TC143307-01) specifying in its Annex 4 the equipment subject to conformity assessment. Water Consumption Conservation Products were approved in 2023 with implementation from 2024. GSO's time plan also names priority areas for future regulations: cosmetics, energy efficiency, hazardous substances in electronics (RoHS), EMC, machinery, lifts, construction products, medical devices, gas appliances, measuring instruments and halal products. Not every Gulf requirement travels with the marking: GSO 9:2022, Labeling of prepackaged food stuffs (Edition 4, approved 19 October 2022), is the Gulf technical regulation that sets prepacked food labelling, and importers meet it through the label itself. Our prepacked food labelling guide covers it in full. Check the specific regulation for your category before assuming the G-mark applies. Toys are the clearest case: the toys import registration guide walks the full stack.

The two systems answer different questions. A GSO certificate (and the G-mark) shows conformity with a Gulf technical regulation and is recognised across the GCC member states. ECAS is the national layer: MoIAT's service page for Issue Conformity Certificates for Regulated Products (ECAS) describes issuing a UAE Certificate of Conformity for products subject to technical regulations set out in MoIAT regulatory decisions, confirming compliance with approved UAE standard specifications to ease product entry and circulation in the country's markets. The UAE sits in both systems at once: MoIAT is GSO's listed member body for the United Arab Emirates, MoIAT routes Product Conformity lookups to its Conformity Hub, and MoIAT runs a separate service for the attestation of a conformity certificate issued by GSO when importing products subject to Gulf technical regulations. Our ECAS certificate guide covers the national route in detail. For the side-by-side of all three marks, the conformity marks comparison lays out who needs which.

The structure comes from the GSO scheme documents. Each Gulf technical regulation prescribes the conformity assessment procedure for its product category, built from modules defined as a set of procedures selected according to the degree of risk and risk analysis (Guide BD09100503). The procedure is carried out by the manufacturer or by a Notified Body, a body notified by GSO as a conformity assessment body in a specific field under the applicable regulation (Guide BD09100502). For product groups such as children's toys and low voltage electrical equipment, the regulations make Notified Body involvement mandatory for testing, inspection and certification, and those mandatory activities are conducted exclusively by such bodies. Once the requirements are met, the product carries the G-mark; for groups where certification by a Notified Body is mandatory, the product is registered in GSO's product tracking system and must display the Gulf Conformity Tracking Symbol (GCTS) on the product and its packaging. The low voltage regulation also grants presumption of conformity to the IECEE-CB scheme and to GSO and latest IEC standards.

Two official pages give concrete inputs. For the national route, MoIAT's ECAS service requires a valid trade licence and a test report on the product issued by an accredited laboratory, submitted after registration on MoIAT's digital platform. MoIAT publishes the fees for that service: AED 600 for submitting a request to register products and services in the UAE Conformity Assessment System, AED 620 for the technical review of documents for each conformity certificate, AED 500 for issuance of the certificate from the Ministry, and AED 2,500 per working day per technical assessor when a technical evaluation of the establishment is conducted, with a stated service time of one and a half working days. For the Gulf route, MoIAT's attestation service certifies a true copy of a GSO-issued conformity certificate for products subject to Gulf technical regulations; it requires a valid trade licence and the GSO certificate number, costs AED 50 per copy and is an instant service. Certification fees charged by GSO notified bodies are not published on these pages, so budget them by quotation from the body you appoint.

Importers mix up three registrations that operate at different levels. The GSO certificate and G-mark sit at the Gulf level: they evidence conformity with a Gulf technical regulation for the product groups it covers, such as toys and low voltage electrical equipment. ECAS sits at the UAE federal level: MoIAT issues UAE certificates of conformity for products its regulatory decisions bring under technical regulation, with its own product lists and requirements. Dubai Municipality registration (Montaji) sits at the emirate level for consumer products sold in Dubai, including cosmetics and personal care items, and it has its own clearance sequence. One product can touch all three: a cosmetic line, for example, is governed at the Gulf level by the cosmetics regulation GSO 1943:2024 (Edition 4, approved 1 May 2024), which sets safety, labelling and packaging requirements for cosmetics and personal care products, while UAE-facing registration runs through MoIAT and Dubai's Montaji platform. Our cosmetics import guide walks the full stack, and the Montaji platform guide covers the Dubai registration itself.

Work top-down: first identify the Gulf technical regulation for your product category and whether a Notified Body certificate with the G-mark and GCTS symbol is mandatory there; second, check MoIAT's regulated product lists for the UAE national certificate; third, add emirate-level registration where it applies, such as Montaji for consumer products sold in Dubai. The sequence matters because certificates, test reports and labels feed each other, and redoing any of them late costs far more than doing them in order. If your product line is cosmetics, personal care or another consumer good heading for Dubai shelves, our product registration service handles the registration stack end to end, from classification to the certificate that clears the border. Montaji product registration