How to verify PHI certificate 2491wi03
Component certificate by Passive House Institute, Darmstadt, valid until 31 December 2026, naming Chongqing Xianju New Material Co., Ltd. as manufacturer. Check it with the issuer before relying on it, and compare your copy with the file published here.
- Manufacturer
- Chongqing Xianju New Material Co., Ltd.
- Valid until
- 31 December 2026
- Issuer
- PHI
What the certificate says
| Component ID | 2491wi03 |
|---|---|
| Category | Window frame |
| Issued by | Passive House Institute, Darmstadt |
| Manufacturer | Chongqing Xianju New Material Co., Ltd. |
| Tested or certified item | Fengdu Passive GFRP 90 Series window frame, cool-temperate climate zone, efficiency class phB, Uw 0.78 W/(m²·K) with Ug 0.70 W/(m²·K) |
| Reported result | Uw 0.78 W/(m²·K) with Ug 0.70 W/(m²·K); efficiency class phB |
| Valid until | 31 December 2026 |
Scope note. PHI 2491wi03 names Chongqing Xianju New Material Co., Ltd. and Fengdu Passive GFRP 90 Series. The stated configuration is cool-temperate, efficiency class phB, Uw 0.78 W/(m²·K) with Ug 0.70; valid until 31 December 2026. It is not Arctic-climate, PHIUS or blanket F1-window certification. Confirm the original and proposed configuration.
Who this certificate covers
The certificate names Chongqing Xianju New Material Co., Ltd. as manufacturer. Chongqing Xianju New Material Co., Ltd. is part of FengDu New Material. F1 Composite is FengDu's export company and supplies products made in FengDu's plants.
It covers the product and configuration named in it. It does not cover products made by any other company, even when the same document is attached to another supplier's offer.
If another supplier sends you this certificate, ask for the holder's written permission to use it and check it with the issuer as described below. You can also send it to us, and we will tell you whether the product offered is ours.
What PHI says about using it: The certificate states the criteria for the cool, temperate climate zone and the glazing it was awarded with. It does not certify other window series, glazing or climate zones.
Check it with PHI
- Search the Passive House Institute's component database (database.passivehouse.com) for component ID 2491wi03, and compare the manufacturer, product name and climate zone with the certificate.
- Check the validity date printed on the certificate, 31 December 2026. After that date, ask us for the renewed certificate.
Files published here 1 file
| File | Size | Digital signature | SHA-256 |
|---|---|---|---|
| Certificate as issued | 401 KB | None | f5d68bd4bc5f6019e77758e6a3991c3c2fd18abbb236b1cc18981a4a0f00bf1e |
To compare a copy you hold, run certutil -hashfile file.pdf SHA256 on Windows or shasum -a 256 file.pdf on macOS and Linux.
A different value means your copy is not the file published here. That alone does not make it invalid, because an issuer may supply another signed copy, so check it with the issuer.
Received this document from another supplier?
Send it to us with the offer. We will confirm whether the product offered comes from FengDu's plants and whether the document applies to it. We reply within one business day.