Hunan Shengtong New Materials Technology Co., Ltd. Shengtong New Materials EMI Shielding Solutions
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Certificates, Test Reports & TDS

Third-party test reports issued by CTI (Centre Testing International Group) covering RoHS, REACH SVHC, halogen content and California Proposition 65, with SGS screening available for three graphene grades — together with our registration certificates, granted patents and technical data sheets.

CTI RoHS test report A2260188789101001 for graphene conductive cloth CTI REACH SVHC screening report A2260188789102001 for graphene conductive cloth CTI halogen test report A2260188789101002 for graphene conductive cloth CTI California Proposition 65 test report A2260527529101001 for graphene conductive cloth

Scope of these reports: each report below was issued by an independent third-party laboratory and applies to the sample declared on it — graphene conductive cloth. They are test reports, not product certifications — each one applies only to the sample declared on it. SGS screening carried out in April 2024 covered three graphene grades: conductive cloth, thermal-conductive cloth and anti-corrosion conductive cloth; copies are supplied on request. Any other material in our range can be submitted for the same testing — we quote the test alongside the material.

CTI Test Report RoHS & Phthalates No. A2260188789101001 All items N.D.

RoHS Restricted Substances Test Report

Lead, cadmium, mercury, hexavalent chromium, PBBs, PBDEs and the four phthalates (DBP, BBP, DEHP, DIBP) tested to the IEC 62321 series by ICP-OES, UV-Vis and GC-MS. Every item was below the method detection limit.

  • Test itemsPb, Cd, Hg, Cr(VI), PBBs, PBDEs, 4 phthalates
  • MethodIEC 62321-4 / -5 / -6 / -7-2 / -8
  • ResultN.D. = not detected (below MDL)
  • Issued19 Mar 2026

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Sample: graphene conductive cloth · Issued by Centre Testing International Group Co., Ltd.
CTI Test Report REACH SVHC Screening No. A2260188789102001 Pass

REACH SVHC Screening Report

Screening of the 253 substances of very high concern on the ECHA candidate list under Regulation (EC) No 1907/2006 (REACH), plus one substance on the intention list. Concentrations of SVHC are ≤ 0.1% (w/w) in the submitted sample.

  • Scope253 SVHC + 1 intention substance
  • ResultPass — ≤ 0.1% (w/w)
  • MethodICP-OES, GC-MS, LC-MS-MS, HPLC-DAD and others
  • Issued24 Mar 2026

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Sample: graphene conductive cloth · Issued by Centre Testing International Group Co., Ltd.
CTI Test Report Halogen Content No. A2260188789101002 All items N.D.

Halogen Test Report (F, Cl, Br, I)

Fluorine, chlorine, bromine and iodine tested to EN 14582:2016 by ion chromatography. All four were not detected, supporting halogen-free requirements where your customer specifies them.

  • Test itemsFluorine, chlorine, bromine, iodine
  • MethodEN 14582:2016, IC
  • ResultN.D. (MDL 10 mg/kg)
  • Issued19 Mar 2026

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Sample: graphene conductive cloth · Issued by Centre Testing International Group Co., Ltd.
CTI Test Report California Prop 65 No. A2260527529101001 All items N.D.

California Proposition 65 Test Report

Lead and cadmium in non-metal substrate, plus phthalates, tested against California Proposition 65 settlement requirements. Lead, cadmium and phthalates were not detected in the submitted sample.

  • Lead (Pb)N.D. (MDL 5 mg/kg)
  • Cadmium (Cd)N.D. (MDL 2 mg/kg)
  • MethodCPSC-CH-E1002-08.3; US EPA 3052 & 6010D
  • Issued29 Jun 2026

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Sample: graphene conductive cloth · Issued by Centre Testing International Group Co., Ltd.
On request Technical Data Sheet One sheet per product family Issued with quotation

TDS & Technical Data

Product data sheets listing surface resistance, thickness, adhesion, test methods and handling guidance for each material family. Current revisions are issued by our sales team so the sheet always matches the material and grade we are quoting.

Request TDS

Sent with the quotation or sample dispatch
Testing & verification

What We Verify Before a Material Leaves

Performance testing is carried out in-house against the targets you set. Restricted-substance testing — RoHS, REACH SVHC, halogen and Prop 65 — is carried out by CTI, an independent third-party laboratory, so the report carries weight with your own compliance team. SGS screening can be arranged on request. Where your team uses a specific standard, we test to that method rather than a generic internal one.

Test itemPurpose
Surface resistanceConfirms the coating reaches the target conductivity, down to ≤ 50 mΩ/sq
Coating thickness / weightVerifies build-up is within the agreed window
AdhesionCross-hatch and tape testing to check the coating does not flake or delaminate
Abrasion resistanceSimulates handling and assembly wear
Alcohol / solvent resistanceFor parts that see cleaning agents in service
Release forceLiner and die-cut performance on tape constructions
Temperature resistanceBehaviour at continuous and peak operating temperature
Restricted substancesRoHS, REACH SVHC, halogen and Prop 65 — tested by CTI, independent laboratory
Cover page of the CTI REACH SVHC screening report for graphene conductive cloth
How to get them

Requesting Documents

Certificate and TDS copies are issued directly by our sales team so we can match the exact material and revision to your project.

01

Tell us the material

Product family, grade and the market the documentation is for.

02

We send current revision

Latest certificate and TDS files, with validity dates stated.

03

Support if it is rejected

If your compliance team needs an additional test, we quote it and arrange the testing.

Request certificates & TDS

Company credentials

Registration, Awards and Granted Patents

Hunan Shengtong New Materials Technology Co., Ltd. is a registered National High-Tech Enterprise, certificate No. GR202343000889, and holds a Two-Integration management system certificate covering both industrialisation and informatisation.

National High-Tech Enterprise certificate, No. GR202343000889, issued 2023
Two-Integration management system certificate covering industrialisation and informatisation
ISO 9001 quality management system certificate held by Shengtong New Materials
Industry-academy-research cooperation base plaque with Central South University of Forestry and Technology
Teaching and internship base plaque awarded by Changsha University of Science and Technology
Third prize, Hunan provincial round of the 6th China Innovation and Entrepreneurship Competition

Granted invention patents

Eight granted invention patents and four granted utility models support the coating formulations and process equipment we run. The patents cover the formulation chemistry, the coating and film-handling hardware, and the drying and roll-handling stages of the line — which is why the coating head and the chemistry can be changed together.

No.Patent titlePatent numberTypeStatus
1Graphene conductive material, its preparation method and useCN114085412BInvention patentGranted
2Ultra-low-resistance black conductive cloth and its preparation methodCN114086402BInvention patentGranted
3Flexible conductive cloth and its preparation methodCN114232352BInvention patentGranted
4Brush-plating mechanism, apparatus and method for nickel-plating electromagnetic shielding fabricCN114457398BInvention patentGranted
5Production equipment and method for brush nickel-plating of electromagnetic shielding fabricCN114438565BInvention patentGranted
6Coating apparatus and coating methodCN117066024BInvention patentGranted
7Web cutting and separating apparatus, web cutting and separating method, and web roll-changing methodCN117049258BInvention patentGranted
8Drying equipment and drying method for a strip-material processing lineCN118347273BInvention patentGranted

Four granted utility models and several software copyrights accompany this list. Certificate scans below are a sample held on file; every patent above is searchable by number in the China National Intellectual Property Administration register.

Granted invention patent certificate issued by CNIPA to Shengtong New Materials
Granted invention patent certificate held on file by Shengtong New Materials
CNIPA granted invention patent certificate for a Shengtong New Materials patent
Granted invention patent certificate issued to Shengtong New Materials
CNIPA invention patent certificate held on file by Shengtong New Materials
Granted invention patent certificate for a Shengtong New Materials patent

Need a Specific Test for Your Market?

Tell us the standard and the receiving market — we will confirm whether we already hold it or arrange the test.

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