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home
about us
company profile
culture
Enterprise Features
Development Process
products
Napa Leather
Tumble Leather
Frosted Leather
Yashuai Leather
Oil Wax Leather
Science & Technology
Research & Development System
Technical connection
quality control
environmental protection
news
Company news
Industry news
benefit
social causes
charities
Educational
service
contact us
feedback
network
Language
Chinese
English
SCIENCE & TECHNOLOGY
Technical connection
Research & Development System
Technical connection
quality control
environmental protection
Research & Development System
Technical connection
quality control
environmental protection
Patent certificate
Certification certificate
PCN2201640 Utility Model Patent Certificate
PCN2201642 Utility Model Patent Certificate
PCN2201643 Utility Model Patent Certificate
PCN2201644 Utility Model Patent Certificate
Patent CN 216585043 U certificate
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