Yes. Jubang can provide project-related technical documents according to product and project requirements.

Available documents may include:

• Product specifications

• Technical drawings

• Wiring diagrams

• Test reports

• Packing lists

• Installation manuals

• Operation manuals

• Maintenance guidance

• Certificate documents

• Export-related documents

Document scope should be confirmed during technical communication and order confirmation.

Old electrical equipment should be evaluated when it shows signs of aging, frequent faults, overheating, insulation deterioration, insufficient breaking capacity, unavailable spare parts or inability to meet current load requirements.

Upgrade or replacement may be considered when:

• Equipment has been operating for many years under heavy load

• Maintenance cost is increasing

• Spare parts are difficult to obtain

• Safety risks are rising

• The system cannot support new loads

• Monitoring and communication functions are required

• Project standards or regulations have changed

Jubang can help customers review existing system requirements and provide suitable upgrade, replacement or customized equipment solutions.

Maintenance depends on the equipment type, operating environment, load condition and usage frequency.

In general, regular maintenance should include:

• Visual inspection of cabinets and components

• Checking for overheating, abnormal noise or odor

• Tightening electrical connections where required

• Cleaning dust and moisture

• Checking insulation condition

• Testing protection devices

• Reviewing operating records and alarm data

• Inspecting ventilation and cooling conditions

For critical systems, Jubang recommends establishing a preventive maintenance plan to reduce unexpected downtime and extend equipment service life.

Yes. Jubang can provide technical support according to project requirements, including product selection, technical communication, drawing confirmation, installation guidance, commissioning support and after-sales service.

For different projects, support methods may include:

• Online technical communication

• Documentation support

• Installation guidance

• Commissioning assistance

• Troubleshooting support

• Maintenance recommendations

• Spare parts coordination

The exact support scope can be confirmed based on the project location, product type and service requirements.

Jubang applies full-process quality control covering incoming materials, manufacturing, assembly, testing and final inspection.

Quality assurance may include:

• Raw material inspection

• Process inspection

• Electrical performance testing

• Mechanical performance testing

• Temperature rise testing

• Lightning impulse testing

• Partial discharge testing

• Final product inspection

• Test report management

The company also applies quality tools such as FMEA, PPAP, 8D, Control Plans and Six Sigma to support continuous quality improvement.

Jubang implements strict quality and management systems, including ISO 9001 Quality Management System, ISO 14001 Environmental Management System and ISO 45001 Occupational Health and Safety Management System.

The company is equipped with a CNAS-accredited national laboratory and follows full-process quality control from raw material procurement to finished product delivery.

For specific projects, applicable standards and certification requirements should be confirmed based on the product type, destination market and customer specification.

Yes. Jubang supports customized electrical solutions for power distribution equipment and project applications.

Customization can include:

• Electrical parameters

• Cabinet structure

• Enclosure size and color

• Component configuration

• Protection and control functions

• Communication interfaces

• Smart monitoring requirements

• Logo, nameplate and packaging

• Technical drawings and project documents

Customized solutions can be applied to power grid projects, industrial facilities, commercial buildings, photovoltaic power generation, energy storage systems and heavy industry applications.

To provide an accurate quotation and technical proposal, Jubang usually needs basic project and electrical parameters.

Recommended information includes:

• Product type or solution requirement

• Rated voltage, current and frequency

• Required capacity or load demand

• Short-circuit level, if available

• Installation location and environment

• Protection level or enclosure requirement

• Applicable standards

• Quantity

• Required delivery schedule

• Drawings or technical specifications, if available

If the project is still in the early stage, Jubang can provide preliminary product recommendations based on the application scenario.

The right product depends on your power system structure, voltage level, load capacity, installation environment and application scenario.

For example, a building power distribution project may require transformers, low-voltage switchgear, distribution boxes and circuit breakers. A photovoltaic or energy storage project may require step-up transformer systems, switchgear, protection devices and grid connection equipment. A utility distribution project may require ring main units, box-type substations and medium-voltage switchgear.

To help with selection, Jubang recommends providing:

• Application scenario

• Rated voltage and current

• Transformer capacity

• Load type

• Indoor or outdoor installation

• Single-line diagram, if available

• Local standards or project specifications