OFD (Open Fixed-layout Document) is a national standard for layout documents formulated by the layout writing group established by the  Electronics Technology Standardization Institute, led by the Software Department of the Ministry of Industry and Information Technology. It is an independent format in China and must break the boundaries between government departments and The format of electronic official documents of party committees is not uniform, so as to facilitate the storage, reading and editing of electronic documents.。
Mathematics OFD Reader supports national standard format, reliable reading, and is an ideal reading tool for electronic documents such as electronic invoices, electronic certificates, and electronic medical records.。

Software features

Multi-format support – there are so many files, I can help you read them all
Open and browse OFD, PDF, XPS, PNG, BMP, JEP, TIFF files losslessly
Signature and seal verification – what you see is worthy of your trust
Verify digital signatures and electronic seals in documents to ensure document security and credibility
Sign, comment, mark – seamless collaboration, express your ideas freely
It has a variety of signing and approval tools and supports terminal devices to realize handwritten signatures with original handwriting.
Invoice Assistant – Worry-free invoicing because you have a dedicated invoice manager
Provides common electronic invoice functions such as batch viewing, verification, marking, management, conversion, and sharing of electronic invoices

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