Certifications | GRS Scope Certificate, Patents and Compostable Certification Route

This page lists what we hold, what it covers, and what it does not cover. Everything below is either a document we can send you or a statement that the document is confirmed in writing on inquiry.

GRS — Global Recycled Standard

GRS scope certificate record
Standard	Global Recycled Standard (GRS)
Certificate number	SGC-GRC05312-GRS-2026-03
Issued by	SGS-CSTC Standards Technical Services Co., Ltd., licensed by Textile Exchange
Valid through	29 March 2027
Certificate holder	Dongguan Zhihongyi Packaging Products Co., Ltd. — our manufacturing entity
Textile Exchange ID	TE-00027029
Certified product categories	Packaging (PC0023) and functional accessories (PC0017)
Certified processes	Extrusion (PR0010), manufacturing (PR0016), printing (PR0023)
Certified facility	No. 103, Building 11, Baohu Road, 76th Street, Xiegang Town, Dongguan, Guangdong 523593, China
Certified inputs	Post-consumer and pre-consumer recycled polyethylene
Transaction certificates	A transaction certificate can be arranged for a GRS order. The minimum order volume that qualifies is confirmed on inquiry.

GRS scope certificate, page 1 of 3, certificate number SGC-GRC05312-GRS-2026-03 — Scope certificate, page 1 of 3. Pages 2 and 3 list the certified product categories and material codes, and are supplied with any quotation.

The certificate number above can be verified with the issuing certification body, and certified entities are listed in the public GRS database maintained for the standard. Please check it — that is normal buyer behaviour, not an accusation.

How a transaction certificate flows with your order

Order confirmed against a written specification, including the recycled grade and the percentage the certificate scope supports.
Production runs under GRS chain of custody: certified input stays identifiable through extrusion, printing and conversion.
A transaction certificate is applied for against the order, listing certified material, recycled content and quantity.
Shipment moves with the specification and, on request, pre-shipment inspection documentation; the TC follows through the certification body.

Build TC lead time into your compliance calendar at specification stage. Discovering it at audit is the expensive version.

Compostable certification — OK Compost, EN 13432 and BPI

Compostable constructions are quoted against the certification route your market names. The grades are not interchangeable, and choosing the wrong one is the most common mistake in this category.

Compostable certification routes
OK Compost INDUSTRIAL	Certifies disintegration under industrial composting conditions, assessed on the EN 13432 basis. Applies where an industrial composting collection route exists.
OK Compost HOME	Certifies disintegration at ambient home-compost temperatures. A substantially harder test and a different mark from the industrial grade.
EN 13432	The European standard for packaging recoverable through composting: characteristics, test methods and evaluation scheme.
BPI Compostable	The North American certification mark, assessed against ASTM D6400 / D6868.
Certificate status for your order	Confirmed in writing on inquiry. We do not publish a certification mark on this site, or print one on a bag, until the document covering that specific construction is in hand.

A compostable claim describes an end-of-life route. If that route does not exist where your customer lives, the claim describes something your customer cannot do. Tell us the market and the disposal route and we will quote the grade that matches, or tell you plainly that a recycled-content polyethylene bag is the honest answer for that application.

Utility model patents

Granted utility models
ZL 2021 2 2644227.8	Certificate no. 16395918, publication CN 216400182 U, filed 1 November 2021, granted 29 April 2022
ZL 2021 2 2667651.4	Certificate no. 16602705, publication CN 216612446 U, granted 27 May 2022

Patent numbers are published so they can be checked in the public register. Titles and translations are not reproduced here, because a translated title is not the document. A register check of every 至弘意 / Zhihongyi assignee returns exactly these two utility models, so no third patent is claimed on this site.

Test reports and technical data

Measured values are issued only against a named test standard, with the method and the report reference attached — never as a datasheet figure.
A technical data sheet is issued per construction and per resin grade and goes out with the quotation, so your compliance function reads the same numbers we priced against.
Production batches are recorded against resin lot, extrusion run and print run, and a retained sample from each batch is kept at the factory against the shipment it came from.
Where a test is not in our current report set we say so, and treat it as a testing decision to make before your order rather than after it.

Claims we do not make

We do not describe polyethylene products as compostable or biodegradable.
We do not publish a recycled percentage that a transaction certificate cannot support.
We do not publish a recyclability claim for a region whose collection infrastructure we have not verified.
We do not describe any product as plastic-free or zero-waste.
We do not present a client's name or logo as an endorsement; the partners page lists supply history only, with every trademark credited to its owner.

Request certificate documentation with your quotation

The documents behind the claims