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Huang Guanying's letter of appointment of external instructor of Xi'an Jiaotong University
2021-04-16 15:38:28
National demonstration Unit of Integrity for small and medium-sized Enterprises
2021-04-16
Occupational Health and Safety Management system Certification ISO45001-2018
High tech enterprise certificate
2022-06-10
National Environmental label Product Certification Ten Ring Mark
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