- Hebei Yida Anti Impact Coupling System CJ
- Hebei Yida Rebar Mechanical Splice Product Brochure
- Hebei Yida Quality Management System ISO9001 Certification
- Hebei Yida Quality Management System BS EN ISO 9001: 2008 Tusipasi
- UK Cares Technical Approval Quality Management Certificate
- Hebei Yida Cares Technology Approval TA1-B 5068