Haosen Jewelry commissioned Guangdong Consumer Testing Technology Co., Ltd. (CTT) to measure cadmium, lead, and total nickel content in a 19mm copper rod material sample. CTT issued report CTT2601011184EN on January 8, 2026, with an overall PASS conclusion against the client requirements listed in the report.
CTT measured 6 mg/kg of cadmium et une bonne 58 mg/kg of lead, both below the specified limit of 90 mg/kg for each element. The laboratory also measured 40 mg/kg of total nickel, for which the report lists the acceptance limit as not applicable. For more information on material options for custom jewelry, see our jewelry manufacturing materials guide.
To verify the authenticity of this report, visit CTT’s official report verification page and enter report number CTT2601011184EN, completion date 2026-01−08, and the verification code displayed on the page.
Key Test Report Information
| Item | Report Details |
|---|---|
Report Number |
CTT2601011184EN |
Applicant |
DONG GUAN HAO SEN METAL JEWELRY LIMITED |
Testing Laboratory |
Guangdong Consumer Testing Technology Co., Ltd. (CTT) |
Sample Name and Model as Listed |
19MM environmentally friendly copper rod material |
Sample Color |
Brass |
Sample Quantity Received |
Three pieces |
Report Date |
January 8, 2026 |
Tested Material |
Material No. 1, described as “Golden metal” |
Test Items |
Cadmium (Cd), lead (Pb), and total nickel (Ni) content |
Méthode d'essai |
CPSC-CH-E1001-08.3 |
Evaluation Criteria |
Client requirements |
Overall Conclusion |
PASS against the listed client requirements |
See how incoming materials are checked before production in our jewelry manufacturing quality control process.
Other Raw Material Testing Reports
- 316L Stainless Steel Bar SGS RoHS Test Report – February 4, 2026
- 16mm Copper Rod Heavy Metal Test Report – March 17, 2026
- Zinc Alloy Ingots California Proposition 65 SGS Test Report – January 09, 2026
- TC4 Titanium Rod RoHS Test Report – March 05, 2026
- Genuine Leather Lead Content CTT Test Report – October 12, 2026
