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Kailing Technology's fully digitalized e-invoice Leqi solution, the first choice for tax digital upgrading of large group enterprises

Published: 2025-11-19 16:16

With the full implementation of China Golden Tax Phase IV, tax digitalization management has become an unavoidable strategic choice for large group enterprises. In the era of fully digitalized e-invoices, tax management has shifted from traditional "post-event supervision" to "pre-event prevention" and "in-process control." However, facing an increasingly complex tax environment and policy requirements, many large group enterprises are still mired in difficulties such as low invoicing efficiency, chaotic invoice management, and frequent tax risks. Against this backdrop, "Leqi" Direct Connection services, as a new digital tax management paradigm promoted by the State Taxation Administration, provide large group enterprises with an excellent opportunity to break through traditional tax management bottlenecks.


I. Leqi Direct Connection: The core fulcrum of tax digitalization for large groups

Leqi (Natural System) is a comprehensive digitalized e-invoice and other tax-related service with open rules and unified standards provided by the State Taxation Administration to eligible enterprises. For large group enterprises, Leqi Direct Connection is not only a policy requirement but also key infrastructure for upgrading tax digital management.

Compared withAPI interfaces,Compared with traditional solutions such as RPA, Leqi Direct Connection has three core advantages:

- 365*24 uninterrupted invoicing:By replacing face scan authentication with a fixed IP address, the peak-period lag of the electronic tax bureau at month-end/month-beginning is completely solved, enabling automatic invoicing as soon as business occurs

- BusinessAdvantages:Large-scale bidding projectsMayMake whether an enterprise is a Leqi Direct Connection enterprise a business requirement to gain competitive advantages for the enterprise.

- Hidden policy support:Respond to the national call, support the work of competent tax offices/bureaus, and reserve space for subsequent policy benefits

Leqi Direct Connection: The core fulcrum of tax digitalization for large groups


II. Core pain points of tax digitalization for large group enterprises

Large group enterprises face many common challenges in tax management:

- Low invoicing efficiency:The traditional invoicing model relies on manual operations, has a cumbersome process, and is slow, unable to meet the needs of rapid business development

- Fragmented invoice management:Output and input VAT invoice management are fragmented, unable to form a unified invoice data pool, causing reconciliation difficulties

- Tax risks are hard to control:Problems such as incorrect invoice information, duplicate reimbursement, and abnormal invoices occur frequently, increasing tax risks

- Business-finance systems are disconnected:The business system and tax system are not connected, resulting in serious data silos that affect decision-making efficiency

- Increased compliance pressure:China Golden Tax Phase IV has increasingly strict requirements on invoice compliance, and traditional management methods can hardly meet them


III. Kailing Technology Leqi Direct Connection Solution: The Intelligent Engine for Tax Digitalization of Large Groups

Facing the above challenges, Beijing Kailing Technology Co., Ltd., based on years of experience in business-finance-tax digitalization, launches the "Fully Digitalized E-Invoice Leqi Solution," providing enterprises with professional, efficient, and reliable tax digitalization management services.

1. Deeply solving the difficulties of Leqi Direct Connection integration

Leqi Direct Connection integration has six core difficulties: process design, validation logic, layout files, invoice types, sandbox testing, and operation interface. Through self-developed encapsulated interfaces and mature solutions, Kailing Technology effectively resolves these pain points:

- Full-process automation: all process nodes are already developed within the system, with no need for enterprises to design processes themselves

- Precise error prompts: real-time feedback on non-compliance reasons during operation, avoiding the trouble of enterprises investigating on their own

- All invoice type compatibility: supports VAT special invoices, ordinary invoices, e-invoices, fully digitalized e-invoices, and other full-category bills

- Automatic layout file generation: self-developed layout composition technology automatically completes the generation of invoices in PDF, OFD, and XML formats

- Worry-free sandbox testing: Provide a visual front-end page, freely control Leqi capabilities, and view testing progress in real time

2.Full source code delivery, ensuring enterprise autonomy and control

Kailing TechnologyCan according to enterprise needsProvide the full source code of the "Fully Digitalized E-Invoice Management System" and complete the knowledge transfer for source code use. This not only complies with the State Taxation Administration's requirement that "Leqi-related systems do not adopt third-party hosting commitments," but also ensures that enterprises have fully independent system management capabilities, avoiding the risk of "technology lock-in."

3.Seamless integration with mainstream systems to achieve business-finance-tax integration

The Kailing Technology solution has established deep integration with mainstream business systems such as SAP, Oracle, Yonyou NCC, and Kingdee, achieving full-process connectivity from contract to invoicing, payment collection, and bookkeeping, thoroughly solving the problem of "disconnected business and finance systems."

Deeply solving the difficulties of Leqi Direct Connection integration


IV. Why is Kailing Technology the first choice for large group enterprises?

1. Professional experience:The Kailing Technology team is all engaged in business-finance-tax industry-related work10years or more, with core members possessing extensive experience in Leqi implementation and fully digitalized e-invoice projects

2. Technical strength:Self-developed fully digitalized e-invoice management system, successfully applied in multiple large group enterprises

3. Delivery assurance:Provide 365*7*24-hour service support, with issues responded to within 10 minutes and resolved the same day

4.Autonomous and controllable:Can provideFull source code delivery, ensuring the enterprise has complete autonomous system management capability

5. Continuous upgrades:UndertakeSandbox testing for new invoice types is completed within 5 working days, ensuring the system continuously adapts to policy changes

Why is Kailing Technology the first choice for large group enterprises?


Against the backdrop of the full implementation of China Golden Tax Phase IV, tax digitalization is no longer an "optional item," but a "mandatory item" that large group enterprises must face. Kailing Technology's fully digitalized e-invoice Leqi solution, with its professional product capabilities, rich implementation experience, and reliable delivery assurance, has become the preferred solution for tax digitalization upgrades of large group enterprises. Through Kailing Technology, large group enterprises can not only easily meet Leqi access requirements, but also achieve tax digitalization transformation from "passive compliance" to "active management," injecting strong momentum into their sustainable development.


Choosing Kailing Technology is not only choosing a tax management tool, but also choosing a new way of thinking about digital tax management. In the wave of digitalization, Kailing Technology will join hands with large group enterprises to advance together toward a new stage of intelligent, digital tax managementhttps://www.kailingteck.com/h-col-123.html



As a comprehensive business-finance-tax digitalization solution service provider, Kailing Technology provides business-finance-tax management digital transformation products and operational services for various government agencies, institutions, and large, medium, and small enterprises. The product line includes:

Solutions for sales contract management system, procurement contract management system, fully digitalized Leqi interface project, automatic output VAT invoicing system, invoice issuance for individuals system, employee expense control and reimbursement system, input VAT invoice management system, supply chain collaborative reconciliation system, imaging OCR recognition system, automatic financial bookkeeping system, electronic accounting archives system and other businesses, comprehensively advancing the digitalization process across various fields.

If you have any business-finance-tax digital transformation needs, welcome to contact us. Beijing Kailing Technology will serve you wholeheartedly.

Why is Kailing Technology the first choice for large group enterprises?




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Common Questions
What advantages does Leqi Direct Connection have over traditional API or RPA solutions?
Leqi Direct Connection replaces facial recognition authentication with a fixed IP, enabling 365×24-hour uninterrupted invoicing and avoiding peak-time lag; large-scale bidding and tendering may treat it as a business requirement; it responds to national policy and reserves space for future benefits.
How does Kailing Technology's Leqi solution solve integration difficulties?
Kailing Technology realizes full-process automation through encapsulated interfaces, with no need for enterprises to design processes themselves; provides precise error prompts; supports all invoice types; self-developed layout synthesis technology automatically generates PDF/OFD/XML; and provides a visual sandbox testing page with real-time progress visibility.
Can Kailing Technology provide source code delivery?
Yes. Kailing Technology can provide the full source code of the fully digitalized e-invoice management system according to requirements and complete knowledge transfer, ensuring enterprise autonomy and controllability, complying with the State Taxation Administration's requirement not to use third-party hosting, and avoiding technology lock-in.
Which business systems can Kailing Technology's solution integrate with?
Already deeply integrated with mainstream business systems such as SAP, Oracle, Yonyou NCC, and Kingdee, enabling full-process connectivity from contract to invoicing, payment collection, and bookkeeping, solving the disconnect between business-finance-tax systems.
What commitments does Kailing Technology make in terms of service assurance?
Provide 365×7×24-hour service support, with issues responded to within 10 minutes and resolved the same day; commit to completing sandbox testing for new invoice type compatibility within 5 working days, ensuring the system continuously adapts to policy changes.
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