Compliance

Certifications and structural safety

The documents behind the product: US code evaluation for cold-formed framing, CE-related factory and panel certificates for the building envelope, ASTM E119 fire and ASTM E336 acoustic test reports, plus EPA, UL and transformer coverage for the power chain.

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Certificate register: 13 documents
Envelope: EN 1090 · EN 14509
Fire tests: ASTM E119 · GB/T 9978
Structural: ESR-4540 + FEA

01Framework

Standards we design and document to

Each business line is backed by a different document set. The table separates what is certified from what is calculated per project.

Structural

IBC 2024–2012 · AISI S100 / S240 / S220 · ICC-ES ESR-4540

Cold-formed steel framing evaluated for US code compliance, with member capacity and installation conditions defined in the evaluation report.

Structural analysis

GB 50009-2012 · GB 50017 (2003 / 2017) · GB 50011-2010 · GB 50007-2011 · GB 50661-2011

Reference container and expandable-box structures are analysed by finite element method for permanent, live, wind and seismic loads, with connections and foundations checked separately.

Emissions

40 CFR Part 60 Subpart IIII · EPA Certificate of Conformity

Stationary diesel engines are supplied with the applicable EPA certificate for the engine family and model year.

Electrical and generator design

UL 1004-1 · UL 1004-4 · IEEE C57.12.00 / 28 · EN IEC 61558-1 · ISO 8528 · IEC 60034

Generator alternators, transformer families and battery components are certified to the standards listed; cabin integration remains project-specific.

Building envelope and fire

EN 1090-1 / -2 · EN 14509:2013 · ASTM E119 · ASTM E336 · GB/T 9978.1 · GOST R 58760-2019

Steel structures and sandwich panels are supported by factory production control and CE-related certificates, with fire and acoustic test reports for the tested build-ups. Project assemblies must match the tested detail.

Quality and release

ITP · MDR · NCR / CAPA · AWS D1.1 · ISO 1461 · UL 2755 / NEC 646 · Intertek TPIA

Inspection and test plans define the checkpoints, acceptance criteria, records and hold points behind each release. The Manufacturing Data Record is compiled per unit and reviewed before dispatch. For modular data centers, UL 2755 / NEC 646 sets the whole-system evaluation context; Intertek TPIA is the third-party factory pathway.

02Certificate register

Certificates and who they cover

Certificate numbers are listed for verification. Documents are released with the project package rather than as open downloads.

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Structural01

ICC-ES evaluation report ESR-4540

Issuer: ICC Evaluation Service (ICC-ES)
Reference: ESR-4540

Cold-formed steel framing members: studs, tracks, joists, headers and connectors for load-bearing and non-load-bearing walls, floors and roofs.

IBC 2024 / 2021 / 2018 / 2015 · AISI S100, S240, S220

Applies toModular housing

ValidityReissued September 2024, revised January 2025

Report holder: Hi-Tech Building Solution Inc.; additional listee: Xiamen Dahe PEB Construction Technology. The report covers framing members and their installation conditions, not the complete building.

Emissions02

EPA Certificate of Conformity — Baudouin 6M33

Issuer: U.S. Environmental Protection Agency
Reference: TMRBL65.4EMS-003

Model year 2026, stationary, output above 560 kW, engine family TMRBL65.4EMS, diesel, no aftertreatment.

40 CFR Part 60 Subpart IIII

Applies toGenerator cabins

ValidityEffective 15 December 2025 to 31 December 2026

Issued to Societe Internationale des Moteurs-Baudouin. The certificate covers the engine family as manufactured; the final engine and cabin configuration is confirmed at order.

Emissions03

EPA Certificate of Conformity — Caterpillar

Issuer: U.S. Environmental Protection Agency
Reference: SCPXL61.1NZS-033

Model year 2025, stationary, output between 560 kW and 2,237 kW, engine family SCPXL61.1NZS.

40 CFR Part 60 Subpart IIII

Applies toGenerator cabins

ValidityModel year 2025 certificate

The certificate applies to the engine family listed. Emission configuration for a specific project is confirmed in the technical agreement.

Electrical04

UL 1004 generator certificate

Issuer: UL Solutions
Reference: 20170711-E305300

Cummins S6L1 series alternators used in diesel generator sets, followed by S, G or D and C through K designations.

UL 1004-1 · UL 1004-4

Applies toGenerator cabins

ValidityIssued 11 July 2017, maintained under UL follow-up service

Issued to Cummins Generator Technologies. Only products bearing the UL certification mark are covered.

Electrical05

UL recognized standby battery component

Issuer: UL Solutions
Reference: MH65343

Standby battery component, Lianzheng C12-100 series and related models, flame class V-0.

UL recognized component — batteries, standby

Applies toPower and UPS cabins

ValidityListed in the UL recognized component directory

Issued to Lianzheng Electronic (Shenzhen) Co Ltd. Battery racks and enclosure integration are engineered per project.

Transformer · CE06

CE attestation — dry-type transformers SG / SC

Issuer: UDEM International Certification
Reference: M.2025.206.C120694

Dry-type transformers, SG and SC series, 50 to 5,000 kVA, after technical file review and factory audit.

2014/35/EU · 2014/30/EU · EN IEC 61558-1 · EN IEC 61000-6-1 / -6-3

Applies toPower and UPS cabins

ValidityRegistered 13 June 2025, valid to 12 June 2030

Issued to Guangdong Shengte Electric Co., Ltd. Covers the listed transformer models, not the complete cabin.

Transformer · CE07

CE attestation — cast-resin transformers SCB10 to SCB14

Issuer: UDEM International Certification
Reference: M.2023.206.C93332

Cast-resin dry-type transformers, SCB10, SCB11, SCB12, SCB13 and SCB14, 50 to 5,000 kVA, 10 kV class.

2014/35/EU · 2014/30/EU · EN IEC 61558-1 · EN IEC 61000-6-1 / -6-3

Applies toPower and UPS cabins

ValidityRegistered 27 November 2023, valid to 26 November 2028

Issued to Guangdong Shengte Electric Co., Ltd. The certificate covers the listed models and ratings.

Transformer · CE08

CE attestation — oil-immersed transformers S11 / S13 / SB20

Issuer: UDEM International Certification
Reference: M.2024.206.C99192

Oil-immersed distribution transformers, S11, S13 and SB20 series, 100 to 5,000 kVA, 10 kV and 35 kV classes.

2014/35/EU · 2014/30/EU · EN IEC 61558-1 · EN IEC 61000-6-1 / -6-3

Applies toPower cabins and site substations

ValidityRegistered 15 April 2024, valid to 14 April 2029

Issued to Guangdong Shengte Electric Co., Ltd. Site substation design and protection remain project-specific.

Transformer · UL09

UL certificate — liquid-filled distribution transformers, US and Canada

Issuer: UL Solutions
Reference: UL-US-26108617-0 · UL-CA-2679768-0

Three-phase liquid-filled distribution transformers over 600 V, with models and ratings listed in the addendum; US and Canadian requirements.

IEEE C57.12.00 · IEEE C57.12.28 · CSA C227.4

Applies toPower cabins and site substations

ValidityIssued 16 March 2026

Issued to Guangdong Shengte Electric Co., Ltd. UL Mark authorization is a separate document; only marked products are covered.

Transformer · UL10

UL certificate — pad-mounted transformers 45 to 5,000 kVA

Issuer: UL Solutions
Reference: UL-US-26109297-0

Three-phase liquid-immersed pad-mounted transformers, 45 to 5,000 kVA, primary 11 to 17 kV, secondary 0.1 to 1.5 kV, mineral or vegetable oil.

IEEE C57.12.00 · IEEE C57.12.28

Applies toSite substations

ValidityIssued 26 March 2026

Issued to Zhejiang Baiyun Zhebian Electric Equipment Co., Ltd. Model code ZGSABC-DE defines the configured rating and voltage.

Building envelope · CE11

EN 1090-1 factory production control certificate — steel structures

Issuer: SGS ICS · Notified Body 1029
Reference: 1029-CPR-CN24/00002472

Factory production control for steel structural components used in buildings, carbon steel S235JR and S355JR, execution class EXC2, welding process 135.

EN 1090-1:2009+A1:2011 · EN 1090-2:2018 · EN 10025-2

Applies toModular housing steel frames

Validity24 April 2024 to 23 April 2027

Issued to Guangdong Orient GS Housing Co., Ltd. Supports CE marking of the listed steel structures under system 2+; it is not a building-level CE certificate.

Building envelope · CE12

EN 14509 certificate of constancy of performance — rock wool sandwich panels

Issuer: SGS ICS · Notified Body 1029
Reference: 1029-CPR-CN24/00002471

Self-supporting double-skin metal-faced insulating panels with rock wool core, painted steel faces, 50 to 100 mm, for internal and external walls.

EN 14509:2013 · System 1 · Reaction to fire A2-s1, d0

Applies toWall and roof envelope

Validity24 April 2024 to 23 April 2027

Issued to Guangdong Orient GS Housing Co., Ltd. Covers the listed 50–100 mm panel range; it supports CE marking of the panels, not the complete building.

Building envelope · Russia13

GOST R 58760-2019 certificate of conformity — prefabricated buildings

Issuer: Apex-Cert · Russia
Reference: POCC CN.AX49.H04318

Prefabricated buildings under the GS HOUSING trademark, serial production; model sizes are listed in the annex to the certificate.

GOST R 58760-2019

Applies toModular housing for the Russian market

Validity8 August 2023 to 7 August 2026

Issued to Beijing GS Housing Co., Ltd. A Russian market certificate, not an EU CE certificate.

CE scope

EN 1090-1 covers factory production control for the listed steel structures. EN 14509 covers the declared performance of the listed sandwich panels. Both support CE marking of those components; neither is a building-level CE certificate.

Certificates are held by the issuing manufacturers and evaluation bodies named above. Project documents include the applicable certificate copy for the ordered configuration.

03Structural safety

Loads, steel and verification

Reference analysis of a steel container structure by finite element method, with the roof, floor and wind cases below. Snow, seismic and site wind govern the final project calculation.

Parameter

Reference value

Basis

Roof live load

2.0 kN/m²

About 42 psf in the reference report.

Floor load

2.5 kN/m²

About 52 psf for the reference accommodation layout.

Design wind speed

120 km/h

About 33 m/s; site-specific values replace this in project design.

Frame steel

Q235

Cold-formed framing under ESR-4540 uses Q235, Q345 or S350GD grades.

Load combinations

1.2D + 1.4L · 1.0D + 1.0L

Strength and serviceability cases checked in the reference analysis.

Roof beam stress

102 / 210 MPa

Maximum combined stress against the limit cited in the report.

Load path

Roof and floor loads transfer through cold-formed members to the primary frame, then to corner castings and the foundation.

Foundation and tie-down

Reference detail: a concrete pad of at least 100 mm, with corner castings welded to base beams and tied to embedded anchor plates for uplift.

Project-level calculation

Snow, seismic, wind and floor loads are confirmed per site. Where the authority requires it, a licensed local engineer issues the building-level calculation under IBC and ASCE 7.

Data center cabins

ISO corner castings, lifting points and transport bracing are checked in the reference design; anchorage and seismic restraint follow the site engineer's requirements.

The container reference report was prepared under GB 50009-2012, GB 50017-2003 and GB 50007-2011; the expandable-box calculation uses GB 50017-2017 with GB 50011-2010 (2016) and GB 50661-2011. Both are design references, not a substitute for a building-level calculation sealed by the engineer of record for the site.

04Building envelope

Fire, acoustic and structural evidence

Test reports for the panel build-ups, room separation and expansion frame used in our modular products. Each result applies to the tested specimen and mounting condition.

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Fire resistance2023-05-29

ASTM E119-22 fire resistance — rock wool composite board

Result

60 min fire resistance with hose stream

Laboratory: SGS-CSTC · CNAS L7877
Reference: SDFS2305002763FR

Specimen

3.47 × 2.7 × 0.16 m composite board: two rock wool sandwich panels plus one fireproof gypsum board.

ASTM E119-22 · ASTM E2226

Applies to

Wall and partition assemblies

Tested assembly as submitted; project detailing must match the tested build-up. Client: Guangdong Orient GS Housing.

Fire resistance2025-08-22

ASTM E119-24 fire resistance — 100 mm rock wool panel

Result

1 h fire resistance with hose stream

Laboratory: SGS-CSTC · Shunde Branch
Reference: SDFTS25005083R01_EN

Specimen

100 mm rock wool sandwich panel, 120 kg/m³, 3.0 × 3.0 m specimen tested as a non-loadbearing wall.

ASTM E119-24 · ASTM E2226

Applies to

External wall panels

Client: MODUS; supplier: Orient GS International Engineering. Applies to the tested 100 mm panel build-up.

Fire resistance2025-08-05

ASTM E119-24 fire resistance — 100 mm panel, second build

Result

0.82 h fire resistance with hose stream

Laboratory: SGS-CSTC · Shunde Branch
Reference: SDFTS25004657R01_EN

Specimen

100 mm rock wool sandwich panel, 120 kg/m³, 3.0 × 3.0 m specimen tested as a non-loadbearing wall.

ASTM E119-24 · ASTM E2226

Applies to

External wall panels

Manufacturer: Orient GS International Engineering; client: MODUS Mobile Infrastructure.

Fire resistance2023-02-16

GB/T 9978.1 fire resistance — 75 mm rock wool panel

Result

0.5 h integrity and insulation (31 min)

Laboratory: CABR · National Center for Quality Inspection & Test of Building Engineering
Reference: BETC-BZ1-2023-00152

Specimen

75 mm rock wool sandwich panel, 2,400 × 1,150 mm, embedded in a brick wall frame.

GB/T 9978.1-2008

Applies to

Wall panels

Client: Beijing GS Housing. Result applies to the tested 75 mm panel and mounting condition.

Acoustic2023-07-21

ASTM E336-17 airborne sound attenuation — modular housing

Result

ASTC 42 (living/kitchen) · ASTC 44 (bedroom)

Laboratory: SGS-CSTC · Changzhou
Reference: CZIN2306000044CM01_EN

Specimen

12.4 × 4 × 2.896 m modular housing unit, steel structure with sandwich panel envelope and gypsum board lining.

ASTM E336-17

Applies to

Room separation in modular housing

Field measurement on an assembled unit; site conditions and final finishes affect the result. Client: Guangdong Orient GS Housing.

Structural calculationCalculation document

Double-Wing Expansion Kit steel structure calculation

Result

All members pass strength, stability, shear and slenderness checks; weld demand/capacity ≤ 1.0

Laboratory: Design calculation · 3D frame analysis
Reference: Double-Wing Expansion Kit

Specimen

Q235B hot-dip galvanized cold-formed steel frame, 5,900 × 2,200 × 2,480 mm, 2,050 mm single-side expansion, 66 nodes and 99 members.

GB 50017-2017 · GB 50009-2012 · GB 50011-2010 (2016) · GB 50007-2011 · GB 50661-2011

Applies to

Expandable house / dual-wing box

Design reference for the expandable box. Site loads, foundations and the building-level calculation are confirmed by the engineer of record.

Material composition2024-08-27

Artificial zero-silica stone composition analysis

Result

13% unsaturated polyester · 87% glass; no crystalline silica peak detected

Laboratory: SGS-CSTC · Guangzhou
Reference: GZIN2408001349CM01_EN

Specimen

Artificial zero-silica stone, grade 2007S, tested by FTIR, PGC-MS, EDX, XRD and TGA.

FTIR · PGC-MS · EDX · XRD · TGA

Applies to

Countertops and interior surfaces

Issued to HUAHE STONE (YUNFU). Composition applies to the tested sample; fabrication and installation dust controls remain project-specific.

Fire ratings apply to the tested assembly, not to every panel thickness or opening detail. Acoustic values are field measurements on the assembled unit. Where a specification requires a different rating, the applicable test is quoted for that build-up.

05Type test reports

Transformer test evidence

Routine, type and special tests from GQI, a CNAS-accredited laboratory. Reports are issued for the tested sample and released with the project package.

Model

Product

Laboratory / reference

Date

Scope

SB20-M-630/10

Oil-immersed transformer

GQI · CNAS L0153DY231069

2023-05-10

Routine, type and special tests to IEC 60076-1/-2/-3/-5/-10; 17 items including temperature rise, lightning impulse and short-circuit withstand.

SB20-M-800/10

Oil-immersed transformer

GQI · CNAS L0153DY230980

2023-04-27

Routine, type and special tests to IEC 60076-1/-2/-3/-5/-10; 17 items including temperature rise, lightning impulse and short-circuit withstand.

SCB12-1250/10-NX3

Cast-resin dry-type transformer

GQI · CNAS L0153Sample ST2003005

2022-09-05

Routine, type and special tests; 13 items including temperature rise, impulse and short-circuit withstand.

Test reports support the certificate files; they do not replace a project-specific transformer selection or protection study.

06Project documents

What ships with a project

The package is assembled once the configuration and the site are fixed. Request the list for your business line and we return the applicable set.

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01
Structural calculation report and load summary
02
EN 1090-1 factory production control certificate and EN 14509 panel declaration
03
ASTM E119 / GB/T 9978 fire test report for the specified panel build-up
04
ASTM E336 acoustic report for the housing layout
05
Expansion-box structural calculation and weld verification
06
Steel mill certificates and coating specification
07
Zero-silica stone composition report for countertops
08
ICC-ES ESR-4540 evaluation report
09
EPA certificate for the selected engine family
10
UL certificate for alternator and battery components
11
Transformer CE / UL certificates and GQI type test reports
12
Factory test record, inspection list and O&M manual
13
Project ITP with H/W/R points and inspection records
14
Manufacturing Data Record (MDR), NCR log and release certificate

No files are downloadable from this site. Documents are sent by email after the request is reviewed.

07Quality system

The inspection records behind the certificates

Certificates describe a product family or a tested assembly. The ITP and MDR describe what actually happened to the unit: which material was used, which check was witnessed, which finding was closed and who released it.

Open quality control

ITP checkpoints

16 typical production checks, H/W/R responsibility codes and four hold points, issued per project.

MDR and release

Material certificates, welding and coating records, MEP tests, NCR closure and a signed release certificate.

Third-party pathway

UL 2755 / NEC 646 whole-system evaluation for modular data centers; Intertek TPIA plan review, in-plant inspection and ongoing audits.

A certificate number is not a substitute for the project record. The quality page explains the checkpoints and the scope limits; the document package is released after review.

Need a document for review?

Send the project location, business line and the certificate or calculation you need. We reply with the applicable package.

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