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Company Introduction
Certifications and Patents
Key proprietary technologies and
Certification Status
ISO certification
Safety and Health Management System (OHK030721) English
ISO certification
Safety and Health Management System (OHK030721)
ISO certification
Quality Management System Certificate (QI712023) in English
ISO certification
Quality Management System Certification (QI712023)
ISO certification
Environmental Management System Certificate (EI400023) in English
ISO certification
Environmental Management System Certificate (EI400023)
Economic Management System Certificate (EI400023)
Economic Management System Certificate (EI400023)
Certificate of recognition
Certificate of Recognition for Corporate Research Institute
Confirmation
Certificate of Technology Innovation SME
Confirmation
Certificate of Technology Innovation Small and Medium Enterprise (English)
Confirmation
Management Innovation-Type SME Confirmation (Renewal)
Confirmation
Management Innovation-Type SME Confirmation (Renewal_English)
Service Mark Registration Certificate
Registration No. 41-0217860
Service Mark Registration Certificate
Registration No. 41-0217861
Service Mark Registration Certificate
Registration No. 41-0217862
Service Mark Registration Certificate
Registration No. 41-0222280
Service Mark Registration Certificate
Registration No. 41-0222281
Service Mark Registration Certificate
Registration No. 41-0222282
Trademark registration certificate
Registration No. 40-0895286
Trademark registration certificate
Registration No. 40-0895285
Trademark registration certificate
Registration No. 40-0895284
Patent certificate
Ground excavation device
Patent certificate
Ground excavation device
Patent certificate
vertical shaft excavation device
Patent certificate
Shaft construction device and construction method
Patent certificate
Wire-type lifting device & fall prevention method
Wire-type lifting device & fall prevention method
Wire-type lifting device & fall prevention method
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