Evidence library
Quality documents and company credentials
Documents are grouped by issuing party and purpose so buyers can distinguish company certifications, product testing and supplier batch inspection records.
Management-system certificates
ISO management-system certificates identify Huahai Feifei (Hebei) Concrete Admixture Co., Ltd.. They certify the stated management-system scope; they are not product certifications.
Independent test report
2024 standard-type PCE test report
Hebei Academy of Building Research Co., Ltd. issued report 冀建检(化)2024-03129 for a standard-type polycarboxylate high-performance water-reducing admixture submitted by Huahai Feifei.
| Water-reduction rate | 29% (requirement ≥25%) |
|---|---|
| 1-hour slump loss | 20 mm (requirement ≤80 mm) |
| Air content | 4.1% (requirement ≤6.0%) |
| Compressive-strength ratio | 1d 180%; 3d 164%; 7d 159%; 28d 148% |
| 28-day shrinkage ratio | 93% (requirement ≤110%) |
Results apply to the tested sample and test conditions; they are not a guarantee for every current grade or concrete mix.
Review the report pages →
Patent record
Invention patent registration record
The supplied three-page registration record covers invention patent ZL201710260451.2 and records the transfer of the patent right to {LEGAL} on 26 May 2022.
The scans are presented as ownership/registration evidence. Product performance claims must still be supported by the applicable current specification and test data.
Environmental records
Environmental registration materials
Four supplied pages relating to fixed-source environmental registration are retained in the evidence library. Buyers may request full-size copies for due-diligence review.
Representative supplier batch reports
These PDFs were issued by Lianyungang Petrochemical Co., Ltd. for individual EPEG, HPEG and TPEG batches. They are supplier batch inspection records—not Huahai Feifei certificates and not independent third-party product certifications.
Document interpretation
Confirms a management system and stated organizational scope.
Reports results for the submitted sample under stated test conditions.
Records inspection results for a specific upstream raw-material batch.
Additional company records
Company honors supplied for review
These images document awards and recognition included in the supplied company material. They are presented as supporting company records and are not substitutes for product test reports or certifications.
