FAQ

Q.  What is the relationship between Joinsun and Jubo Nengyuan?

A.  Joinsun is a wholly owned subsidiary of Jubo Nengyuan, specializing in the global sales and distribution of photovoltaic (PV) supply chain products.

Q. What products does Joinsun offer?

A. Joinsun provides a complete range of high-quality PV products, including:

– Solar modules

– Inverters and power optimizers

– Mounting systems (ground-mounted and rooftop)

– PV cables, connectors, and other accessories All products comply with international standards such as TÜV, UL, IEC, and CE.

Q. How does Joinsun ensure product quality?

A. Joinsun holds official authorization from leading Tier 1 brands, ensuring genuine factory-direct products backed by complete manufacturer warranties.

Q. What are Joinsun‘s main advantages in the global market?

A.Tier 1 brands ，We mainly offer Tier 1 brands, particularly JA Solar. We have been the top sales champion in the China market for many years.

Competitive pricing，

Fast delivery,

Customized solutions, for large-scale projects and distributors

Responsive after-sales support and warranty services

Q. What warranty terms does Joinsun provide?

A.Tier 1 brands, ensuring genuine factory-direct products backed by complete manufacturer warranties.

Depending on the product type,

Up to 30-year linear power output warranty for solar modules.

5–10-year product warranty for inverters and other equipments.