Name of the certificate: CE
Certificate ID: QA-AC-0916/12
December 2012, DZ filter press won the CE certification of ALBERK QA International Technical Control and Certification INC.

Name of the certificate: ISO9001: 2008 Standard
Certificate ID: 01142Q10377R0S
April 2012, Dazhang Group won ISO9001: 2008 quality management system certification.

Name of the certificate: Integrated Filter Press Complete Line
Certificate ID: ZL201620083830.X
August 2016, the integrated filter press complete line independently developed by Dazhang Group won national utility model patent certificate.

Name of the certificate: Chamber Filter Press, with One-shot Pull Open Filter Plate
Certificate ID: ZL201620083815.5
August 2016, the chamber filter press with one-shot pull open filter plate independently developed by Dazhang Group won national utility model patent certificate.

Name of the certificate: Automatic mud storage bucket
Certificate ID: ZL 201220126832.4
October 2012, the automatic mud storage bucket independently developed by Dazhang Group won national utility model patent certificate.

Name of the certificate: Automatic belt filter press
Certificate ID: ZL201220015915.3
October 2012, the automatic belt filter press independently developed by Dazhang Group won national utility model patent certificate.