2022 Closing of tender
ParticipatinginreleaseofGB/T51450-2022,"StandardforBackfillEngineeringTechnologyofMetalandNon-metalMines",whichbecameademonstrationprojectof100groupstandardsapplicationbytheMinistryofIndustryandInformationTechnology(MIIT).Atthesametime,FENYwasawardedtheNationalSpecialized,andNew..