Restructuring
Korea approved a restructuring plan in July 2026 involving Lotte Chemical's Yeosu operations and the Yeochun NCC integration.
Yeosu · ATEX and IECEx
ATEX and IECEx Mobile Phone Distributor in Yeosu
Yeosu is a south coast city of about 269,000 people hosting a major refining and petrochemical complex. GS Caltex is owned in equal shares by Chevron and GS Energy and was founded in 1967 as Korea's first private oil company, so it follows long-established corporate safety systems. Distribution partners for Yeosu are being identified ahead of the Q4 2026 launch of the IS-04Z1.
Pre-launch · certification in progress · Launching Q4 2026
Marking targetEx ib IIC T4Intrinsic safety, Zone 1 / 21 design target · certification in progress
AvailabilityQ4 2026via authorised distributors
Search topicATEX and IECEx
DeviceMobile Phone
RouteDistribution
WhereYeosu
Short answer. Yeosu has no appointed SAMS distributor yet: the IS-04Z1 is pre-launch (certification in progress, no certificate issued, launch planned for Q4 2026), and distributor applications are open.
Current position: certification in progress, nothing issued, launch targeted for Q4 2026. A buyer's engineering review is separate from the certificate. Certification status. Place facts reviewed October 2026.
At a glance · ATEX and IECEx
Checklist: ATEX and IECEx mobile phone for Yeosu
| Check | What to look for | IS-04Z1 today |
|---|---|---|
| Marking | II 2 G Ex ib IIC T4 on the rating plate | Design target; not yet marked |
| EU-type examination certificate | Notified body number and certificate ID | In progress with TÜV; not issued |
| IECEx certificate of conformity | Number listed on the IECEx online register | In progress; not issued |
| Where it applies | Yeosu: Chemical storage tank farms, Marine loading jetties, Refinery process units | Classified by the site operator |
Product · Yeosu
The product behind this search: the SAMS IS-04Z1.
SAMS IS-04Z1
An intrinsically safe Android smartphone designed for Zone 1 and Zone 21 hazardous areas in Yeosu. It is pre-launch: IECEx, ATEX and NEC 500 certification is in progress ahead of the Q4 2026 launch.
- IP68 sealed
- 4,000 mAh battery
- 50 MP camera
- Android 16
- Zone 1 / Zone 21 design target
The site · Yeosu
Yeosu: where the IS-04Z1 would work
Who operates there and which kinds of classified area a handset would meet, from the SAMS site research.
Operators and companies on site
- GS Caltex
- Lotte Chemical
Classified areas to expect
- Refinery process units
- Ethylene cracker and polymer plants
- Chemical storage tank farms
- Marine loading jetties
Local conditions · Yeosu
Site conditions at Yeosu: what wears and what limits equipment
Climate
A humid subtropical climate with heavy June to August rain.
Field notes · Yeosu
More about Yeosu that matters for portable equipment
Yeosu: logistics and access
The company imports around 80 types of crude from about 30 countries and exported to 57 countries in 2022, so tanker and product shipping through the Yeosu coast is continuous.
Yeosu: infrastructure
The aromatics business started in 1990, with annual capacity of 3.0 million tonnes of aromatics and 180,000 tonnes of polypropylene, so benzene-type vapour hazards exist alongside fuel and olefin units.
Yeosu: industry on the ground
GS Caltex has a refining capacity of about 800,000 barrels per stream day, and it operates Korea's largest heavy oil upgrading facility at 275,000 barrels a day, cracking heavy residues into lighter fuels.
Yeosu: industry on the ground
GS Caltex concentrates its refining and petrochemical plants at the Yeosu Complex, which covers about 6 million square metres, making the complex a large single-site hazardous-area environment.
The term · ATEX and IECEx
What “ATEX and IECEx” means for a smartphone
ATEX is the European legal framework for equipment used in explosive atmospheres (Directive 2014/34/EU). IECEx is the international certification scheme built on the IEC 60079 standards. Buyers outside Europe often ask for both: an IECEx certificate is the technical evidence most national regimes build on, while ATEX is the legal route into the European market.
For the IS-04Z1 both routes are in progress with TÜV in Germany and neither certificate has been issued. The marking target is II 2 G Ex ib IIC T4: equipment Group II (surface industry), Category 2 (Zone 1 gas), protection concept ib (intrinsic safety), gas group IIC and temperature class T4.
In Yeosu. A reviewer at Yeosu's refinery and petrochemical complex would expect ATEX and IECEx evidence for handhelds used around crackers, polymer plants and jetties, since licensors and turnaround contractors work internationally. The IS-04Z1 certification is in progress, so only a datasheet is available. Each operator decides what it accepts.
The route · distribution
Distributing the IS-04Z1 in Yeosu
A distributor for Yeosu would carry the IS-04Z1 after certification completes; the Q4 2026 launch is the planning date and no appointment has been made. SAMS reviews applicants one by one and prefers companies with their own Ex-competent technical and service staff, since certified devices must not be repaired outside approved channels.
What SAMS looks for in a partner
- Operator relationships
- Existing supplier registrations or a clear route to them with the main operators and contractors in Yeosu.
- Ex-competent staff
- People who understand zone classification, markings and the conditions of a certificate.
And equally important
- Local-language support
- Documentation, training and helpdesk in the languages the workforce uses.
- Service capability
- Spares, battery replacement and repair routed through SAMS-approved channels.
Questions · Yeosu
Frequently asked questions
Can we buy an ATEX and IECEx mobile phone in Yeosu today?
Not today. Until the certificates are issued the IS-04Z1 stays out of classified areas, and until launch there is nothing to purchase. You can ask for the datasheet and the certification schedule, or book a safe-area evaluation unit.
What does an ATEX and IECEx mobile phone in Yeosu cost?
No price is published. While certification is in progress there is no list price and no committed lead time, and a supplier quoting a firm figure for an uncertified Ex handset is promising something it cannot stand behind. Indicative pre-launch pricing is issued in writing against a stated quantity and site.
Is the IS-04Z1 ATEX and IECEx certified?
Not yet. Both routes are in progress with TÜV in Germany and no certificate has been issued. Any listing that says otherwise is wrong.
Which areas at Yeosu would use it?
Likely candidates are refinery process units, ethylene cracker and polymer plants, chemical storage tank farms, marine loading jetties. Which areas are classified, and to what zone, is set by the site operator's own area classification drawings.
How do I become a SAMS distributor for Yeosu?
Apply through the distributor page with your company details and the territory you cover. SAMS reviews applications company by company and has not yet granted a territory for Yeosu.
How do I register as a contractor or supplier at a Yeosu plant?
Large operators such as GS Caltex normally run vendor registration and safety induction processes, with permits for work in classified areas. Confirm the current requirements directly with the plant's procurement and safety departments before mobilising equipment.
Does the Yeosu rainy season affect handheld equipment?
Yes. June to August brings more than 200 mm of rain a month and high humidity, followed by cold winters. Typically devices need good water ingress protection and cleaning routines, and battery performance should be checked in cold weather.
Does heavy summer rain affect devices at Yeosu?
Yeosu has heavy rain from June to August, which affects outdoor rounds and jetty work. The IS-04Z1 is designed to IP68 for dust and water, but that does not give explosion protection. Plan handling and charging in dry, safe areas and check with the operator.
Related guides
Keep exploring
More on Yeosu, and on other places in South Korea.
Ex-Proof Mobile Phone Distributor in YeosuSame place, different guide
Rugged Mobile Phone in YeosuSame place, different guide
Intrinsically Safe Mobile Phone Distributor in YeosuSame place, different guide
IECEx Mobile Phone Distributor in YeosuSame place, different guide
Hazardous Area Mobile Phone Distributor in YeosuSame place, different guide
Explosion-Proof Mobile Phone in YeosuSame place, different guide
ATEX and IECEx Mobile Phone Distributor in IncheonElsewhere in South Korea
ATEX and IECEx Mobile Phone Distributor in PohangElsewhere in South Korea
ATEX and IECEx Mobile Phone Distributor in DaesanElsewhere in South Korea
ATEX and IECEx Mobile Phone Distributor in BusanElsewhere in South Korea
South Korea market guideCertification route and regulators
All guides for South KoreaEvery route we cover
Certification statusWhat is in progress
Enquiry · Yeosu
Ask about the IS-04Z1 for Yeosu, South Korea
Tell us what you need to equip and where. The SAMS team answers by email with the datasheet and where each certification route stands.
Enquiry · Yeosu
Launching Q4 2026
Planning for Yeosu?
Send the zone and gas group of your site and we will reply with the datasheet and schedule.