Zhejiang Jiuzhou Chem Co reviews
Zhejiang Jiuzhou Chem Co reviews: 7 independent lab tests across 2 products, with a limited lab record.
Written by the Peptide Vendor Reviews editorial team
Is Zhejiang Jiuzhou Chem Co legit? Lab record: Limited
How we rate- 7 independent tests
- 4 of 6 lots filled to label
- Median purity 99.9%
- Its tested product graded C or better
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Vendor website
Visit Zhejiang Jiuzhou Chem Co
7 independent COAs · not paid-to-rank · 2 of 6 lots under label
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Zhejiang Jiuzhou Chem Co products we've tested
Best-graded first. Grades come from the share of each product's samples that passed purity and quantity checks. Buy links open Zhejiang Jiuzhou Chem Co's site.
- TirzepatideAGREAT
- Tests
- 4
- Passed
- 100.0%
- Tests
- 3
- Passed
- —
What the testing shows
Across 6 measured samples from Zhejiang Jiuzhou Chem Co, 2 came in more than 5% under the quantity on the label (33%). Another 1 measured more than 5% over. Purity across 7 readings ran from 99.79% to 99.95%, median 99.9%. Samples span Oct 2025 to Mar 2026.
- Under label
- 2/6
- Median purity
- 99.9%
- Latest sample
- Mar 2026
- Ships from
- China
more than 5% short
99.79%–99.95% range
first tested Oct 2025
per vendor listing
Our read on Zhejiang Jiuzhou Chem Co
4 of Zhejiang Jiuzhou Chem Co's 7 graded samples passed (57%), and 100% of all samples were sent in by buyers rather than by the shop.
When a sample failed, the most common reason was amount in the vial more than 35% off the label (3 times).
Against the 302 shops with at least five graded tests, Zhejiang Jiuzhou Chem Co's pass rate is at or above 20% of them, and it has more tests on record than 17% of them.
When and how Zhejiang Jiuzhou Chem Co was tested
Samples per month. The darker part of each bar failed.
- Labs used
- Krause Analytical (7)
- Who sent the samples
- buyers 100%
- Batches covered
- No batch numbers on the certificates
Why Zhejiang Jiuzhou Chem Co's failed samples failed
The 3 most recent failed tests, with the lab's reason.
Semaglutide · Mar 2, 2026
amount in the vial more than 35% off the label
Semaglutide · Oct 3, 2025
amount in the vial more than 35% off the label
Semaglutide · Oct 3, 2025
amount in the vial more than 35% off the label
Lab testing results
Independent results across 2 products.
Individual lab tests
Date
3/2/2026
Purity
99.9%
Quantity
10 mg → 5.4 mg
Lab
Krause Analytical
Vial
No Label / Silver Crimp / Clear Cap
Date
3/2/2026
Purity
99.9%
Quantity
30 mg → 33.2 mg
Lab
Krause Analytical
Vial
No Label / Gold Crimp / Clear Cap
Date
10/3/2025
Purity
99.95%
Quantity
5 mg → 8.71 mg
Lab
Krause Analytical
Vial
No Label / Silver Crimp / Blue Cap
Date
10/3/2025
Purity
99.8%
Quantity
60 mg → 60.1 mg
Lab
Krause Analytical
Vial
No Label / Silver Crimp / Blue Cap
| Product | Date | Score | Purity | Quantity | Lab | COA |
|---|---|---|---|---|---|---|
| SemaglutideNo Label / Silver Crimp / Clear Cap | 3/2/2026 | 10.0 | 99.9% | 10 mg → 5.4 mg | Krause Analytical | View |
| TirzepatideNo Label / Gold Crimp / Clear Cap | 3/2/2026 | 10.0 | 99.9% | 30 mg → 33.2 mg | Krause Analytical | View |
| Tirzepatide | 2/26/2026 | 10.0 | 99.79% | 15 mg → 14.8 mg | Krause Analytical | View |
| SemaglutideNo Label / Silver Crimp / Blue Cap | 10/3/2025 | 10.0 | 99.95% | 5 mg → 8.71 mg | Krause Analytical | View |
| TirzepatideNo Label / Silver Crimp / Blue Cap | 10/3/2025 | 10.0 | 99.8% | 60 mg → 60.1 mg | Krause Analytical | View |
Which Zhejiang Jiuzhou Chem Co products tested best
Tirzepatide has the strongest record, graded A or B.
Buying from Zhejiang Jiuzhou Chem Co
If you order from Zhejiang Jiuzhou Chem Co, start with the graded products in the table: each one links straight to the shop.
We don't track Zhejiang Jiuzhou Chem Co's prices yet. Shipping, payment and refund terms are on their site.
The official store is www.jiuzhou-chem.com. Check the address before you pay.
What to check before you pay
- The lot number on the vial matches the certificate
- The certificate names the lab and the test date
- Fill versus label, not purity alone
- A refund policy in writing
Track Zhejiang Jiuzhou Chem Co
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Zhejiang Jiuzhou Chem Co: common questions
Is Zhejiang Jiuzhou Chem Co legit?
We rate lab records, not businesses. Limited lab record: 7 independent tests, 4 of 6 lots filled to label, median purity 99.9%, its tested product graded C or better. Each result links to its original certificate in the table above.
What do Zhejiang Jiuzhou Chem Co reviews say?
We don't hold scored customer reviews for Zhejiang Jiuzhou Chem Co yet. The independent lab results on this page are the evidence we have.
Which Zhejiang Jiuzhou Chem Co peptides tested best?
We have graded 1 Zhejiang Jiuzhou Chem Co product. Tirzepatide graded A or B.
Is there a Zhejiang Jiuzhou Chem Co coupon code?
We don't have a verified Zhejiang Jiuzhou Chem Co coupon code. A discount changes the price, not what is in the vial.
Where does Zhejiang Jiuzhou Chem Co ship from?
Public listings place Zhejiang Jiuzhou Chem Co's shipping origin in China. Check the shop's own shipping page before ordering, as origin can change.
Ordering from Zhejiang Jiuzhou Chem Co?
Limited lab record: 7 independent tests, 4 of 6 lots filled to label, median purity 99.9%, its tested product graded C or better.
Contact
- china
- www.jiuzhou-chem.com