High-Tech Enterprise Oct. 28, 2024

High-Tech Enterprise Oct. 28, 2024

QUALITY MANAGEMENT SYSTEM CERTIFIGATE

QUALITY MANAGEMENT SYSTEM CERTIFIGATE

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ENVIRONMENTAL MANAGEMENT SYSTEM CERTIFICATE

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OCCUPATIONAL HEALTH AND SAFETY MANAGEMENT SYSTEM CERTIFIGATE

A Cutter Shaft Quenching Method and Quenching Device Feb. 18, 2025

A Cutter Shaft Quenching Method and Quenching Device Feb. 18, 2025

A Cutter Ring Manufacturing Process Jan. 26, 2011

A Cutter Ring Manufacturing Process Jan. 26, 2011

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A Manufacturing Method of Shield Machine Scraper Jun. 24, 2015

Disc Cutter Ring for Shield Machine and Its Manufacturing Method Aug. 8, 2007

Disc Cutter Ring for Shield Machine and Its Manufacturing Method Aug. 8, 2007

Science and Technology Achievement in Henan Provincial Engineering Construction - Special Prize May 10, 2019

Science and Technology Achievement in Henan Provincial Engineering Construction - Special Prize May 10, 2019

Science and Technology Achievement Certificate (Henan Provincial Department of Science and Technology) Apr. 27, 2006

Science and Technology Achievement Certificate (Henan Provincial Department of Science and Technology) Apr. 27, 2006

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