# ChinaCNU Steel

> ChinaCNU Steel supplies PPGI prepainted galvanized steel coil, GI galvanized steel coil and galvalume/aluzinc coil. The factory is in Boxing County, Binzhou, Shandong, China; the export office is in Qingdao, Shandong. This is a navigation summary of public buyer information, not a certification or binding quotation.

## Company and contact
- [Company information](https://chinacnu.com/about-us/): factory and export-office roles, product selection and order verification.
- [Contact and quotation](https://chinacnu.com/contact-us/): WhatsApp +86 191 5431 6688; email chinacnu01@gmail.com.
- Steel order reference: MOQ from 25 metric tons. Production typically 15–20 days after deposit and specification/color approval; ocean transit is additional. Confirm grade-specific availability, tolerances, payment, freight and final schedule in the written quotation.
- Quotation reference: FOB Tianjin; request destination freight separately.

## Main products
- [PPGI coil](https://chinacnu.com/ppgi-coil/): prepainted galvanized steel, thickness 0.12–1.50 mm; PE/SMP/HDP/PVDF paint options. Specify substrate, zinc mass, paint build and RAL/sample color.
- [GI coil](https://chinacnu.com/gi-coil/): hot-dip galvanized steel, thickness 0.12–3.00 mm, width 600–1500 mm, zinc coating Z30–Z275. Grade-specific limits and tolerances require confirmation.
- [Galvalume coil](https://chinacnu.com/galvalume-steel-coil/): aluminum-zinc alloy coated steel, thickness 0.12–2.00 mm. Confirm AZ coating designation and grade.
- [Aluminium coil](https://chinacnu.com/aluminum-coil/): see the product page for alloy, temper and size-specific quotations.
- [Colour-coated aluminium coil](https://chinacnu.com/color-coated-aluminum-coil/): aluminium substrate; distinct from PPGI galvanized steel.

## Product documents and buying resources
- [Current specification PDFs](https://chinacnu.com/downloads/): PPGI, GI and Galvalume reference sheets revised 20 September 2026. Written grade-specific quotations and mill test certificates govern orders.
- [PPGI colour chart](https://chinacnu.com/ppgi-color-chart/): request a physical sample for final color approval.
- [PPGI quote guide](https://chinacnu.com/ppgi-coil-price/)
- [GI quote guide](https://chinacnu.com/gi-coil-price/)
- [Frequently asked questions](https://chinacnu.com/faq/)

## Spanish-language product information
- [Bobina de acero prepintado PPGI](https://chinacnu.com/es-ppgi-coil/)
- [Bobina de acero galvanizado GI](https://chinacnu.com/es-gi-coil/)
- [Bobina Galvalume](https://chinacnu.com/es-galvalume-steel-coil/)

## Arabic-language product information
- [لفائف الصلب المطلية مسبقاً PPGI](https://chinacnu.com/ar-ppgi-coil/)
- [لفائف الصلب المجلفن GI](https://chinacnu.com/ar-gi-coil/)
- [لفائف الجلفالوم](https://chinacnu.com/ar-galvalume-steel-coil/)

## Other languages
Published translated product pages are linked by the language selector and reciprocal hreflang on each product page. Check the page language and product-specific specifications before using a translated quotation reference.

## Brand and certificate records
- ChinaCNU is the export brand of Shandong Ruitong New Materials Co., Ltd.
- Registered entity verifiable at gsxt.gov.cn (China National Enterprise Credit Information Publicity System) by Unified Social Credit Code 91371625MA3U4WYY3E.
- [Certificate records](https://chinacnu.com/certifications/): UDEM attestation M.2025.206.C116831, with holder, scope, original PDF and issuer verification. Issuer query showed current on 20 September 2026.
- Historical ISO 9001 certificate 47425Q0076R0S is not current: its QR-linked verification record displayed Revoked on 20 September 2026. It must not be described as current certification.

## Full reference
- [Full specification reference](https://chinacnu.com/llms-full.txt): inlined PPGI / GI / Galvalume specifications, certificate record and ordering terms.