Our PHA (polyhydroxyalkanoate) raw material is certified by TÜV AUSTRIA GMBH under the OK compost and OK biodegradable conformity schemes. Four certificates cover home composting, soil, fresh water and seawater degradation — for the grades PB1001ST, PB3D01 and PB2001IM in resin or granulate form.
| Certification body | TÜV AUSTRIA GMBH — Deutschstraße 10, A-1230 Vienna, Austria |
| Licensee | Beijing PhaBuilder Biotechnology Co., Ltd — No. 21 Zhaofeng First Street, 101399 Beijing, China |
| Certified trade marks | PB1001ST, PB3D01, PB2001IM (PHA resin / granules) |
| Certificate numbers | TA8022509135 · TA8032408809 · TA8042408810 · TA8062509129 |
| Validity | HOME & MARINE: 15 May 2025 – 15 May 2030 | SOIL & WATER: 20 December 2024 – 20 December 2029 |
| Document language | English (issued by TÜV AUSTRIA) |
Click any certificate to open the full PDF. Each one states the certification criteria, the certified trade marks and the validity period.
PHA is a bio-based polymer used as a coating or film layer where compostability and low environmental persistence matter. Typical applications we supply:
It is an independent conformity certificate issued by TUV AUSTRIA GMBH confirming that a PHA (polyhydroxyalkanoate) raw material biodegrades in a defined environment - home compost, soil, fresh water or seawater - under the OK compost and OK biodegradable certification schemes.
OK compost HOME certifies biodegradation under home-composting conditions (lower and more variable temperatures). OK biodegradable certifies degradation in a defined natural environment: SOIL, WATER (fresh water) or MARINE (seawater). A material can carry one or several of these marks depending on which tests it passed.
Yes. Our PHA grades PB1001ST and PB3D01 hold the OK biodegradable MARINE certificate TA8062509129 (valid 15 May 2025 - 15 May 2030), which covers degradation in seawater for film up to 0.25 mm nominal thickness.
Certification is thickness-specific. The OK compost HOME certificate covers film up to 0.985 mm nominal thickness; the OK biodegradable MARINE certificate covers film up to 0.25 mm. Whether a finished product biodegrades as certified depends on its actual thickness and construction.
The certificates are issued for the PHA raw material (resin / granulate) and, per TUV AUSTRIA, only for specimens bearing the conformity mark. A finished article made with PHA-coated or PHA-laminated paper has to be assessed against its own thickness, structure and the requirements of the destination market.
Each certificate shows the TUV AUSTRIA certificate number (TA8022509135, TA8032408809, TA8042408810, TA8062509129), the licensee Beijing PhaBuilder Biotechnology Co., Ltd, and the validity period. The PDF files on this page are the certificates issued to us, and they can be verified with TUV AUSTRIA.
