The company is also engaged in the manufacturing and sales of monocrystalline and multicrystalline solar cells.

It sells its products primarily through a team of sales and marketing personnel to solar module manufacturers, who assemble and integrate its solar cells into modules and systems that convert sunlight into electricity.

JA Solar Holdings also sells its products to customers in Germany, Italy, Sweden, Spain, South Korea, and the United States.

[3] In December 2009 investors began to notice the growing market share of JA Solar which was fueled by a large subsidy from the Chinese government.

[5] A 2023 report by Sheffield Hallam University stated that JA Solar had "very high" exposure to production in Xinjiang involving forced Uyghur labor.