Pre-Sales Service

Provide details about the production procedure

Assign engineers for installation and testing

Sales Service

Customized solution designs

Product rendering and steel structure drawing

Nationvision's successful project examples and visits to our production and R&D base

After-Sales Service

Two-year : quality warranty with lifelong maintenance.

Free guarantee repair (including labor and material) : free repair service during the quality warranty period and reasonable charge for spare parts and maintaining service after the quality warranty period. We will never exempt our responsibilities on product owned defects. Responding time : upon receiving user’s notification, we ensure 24-hour after-sales technical support.

Spare parts : necessary spare parts are provided together with products to customers.

Free technical training : integrative and normative technology training is available for free to customers by our technical personnel to ensure they are skilled in regular operations of hardware and software of products and they are able to estimate and solve small problems.

Telephone investigation : our after-sales team will phone the user every month during the warranty period to follow up the working condition of the products, and to discover and solve problems, if necessary.

Software upgrade : lifelong maintenance of controlling system, incessant improvement of the system functions and continuous software upgrades.

Site instruction service of installation is available.

Free on-site service for hardware related issues

Please call our technical support for more information: 0086-0755-2320 6492