Everything on this page is current and independently verifiable. Management system certificates are issued by ZRIC, a CNAS-accredited certification body; the mining product safety marks are issued under China's MA scheme and can be checked at aqbz.org or by scanning the QR code printed on each certificate.
All three were issued on 6 November 2025 by Shenzhen Zhongren International Certification (ZRIC), a CNAS-accredited body. The scope covers the production of belt conveyor components — idlers, idler brackets and pulleys — which is the wording your tender document will want to see.
The MA mark is a mandatory approval for equipment used in Chinese coal mines, issued under standard MT 821-2006. Our conveyor idler and impact idler ranges each hold approval across four diameters — 89, 108, 133 and 159 mm. All eight were renewed on 28 October 2025 and run to 27 October 2030. Each certificate carries a QR code that verifies against the national database.
Quote the certificate number — for example 26925Q01788R001 — to ZRIC, or search the CNAS register. All three are held in the name Hunan Chenggang Conveyor Technology Co., Ltd.
Scan the QR code printed on each certificate, or look up the certificate number at www.aqbz.org, the national mining product safety mark database. The MA number is the same one shown on the product marking itself.
We will send high-resolution scans or the original PDFs, and can arrange direct confirmation from the issuing body where your tender requires it. Tell us the tender reference and we will prepare the pack.
Send us your tender reference, the certificates required and the buyer's name. We will prepare and send the full document pack — certificates, test reports and material certificates — matched to your submission deadline.
Request the Certificate Pack
