LONGi Green Energy Technology Co., Ltd. is a Chinese solar technology company founded in 2000, focused on monocrystalline silicon wafers, cells and modules. The company’s corporate logo is a typographic wordmark consisting of the stylized wording “LONGi” in red. The mark has no meaning in a foreign language, according to its U.S. trademark registration. [1]
Design and History
The LONGi name traces back to Jiang Longji, a former president of Lanzhou University. In 1986, when company founders Li Zhenguo and Zhong Baoshen were students at the university, they attended an opening ceremony held before Jiang Longji’s statue, and his life story inspired them to name their future company LONGi. The company describes the name as representing “a continuum of cultures and education-driven technologies.” [2]
The current corporate logo is a simple red wordmark in “LONGi” lettering. The company’s official brand positioning emphasizes being “robust, reliable and at the forefront of technology.” [3] The wordmark format places the brand name at the center of the identity, with no accompanying icon or symbol.
In October 2023, LONGi announced a brand identity upgrade for its distributed rooftop solar product line, renaming the Hi-MO 6 series to Hi-MO X6. The company stated the rebrand was intended to better reflect the product’s core value of customer experience, following two years of end-user research. This change applied to the product brand identity, not the corporate LONGi wordmark. [4]
In January 2025, LONGi released a special 25th anniversary emblem alongside its anniversary theme “Ever-Lasting Vitality.” The anniversary mark consists of 25 irregular shapes incorporating elements including a Möbius strip, a DNA helix, sunlight and sparks, using “tech blue” and “sunshine red” colors. The company described the emblem as showing the fusion of technology and humanistic genes over its 25-year history. [5]
Meaning and Symbolism
The red color of the LONGi wordmark is the brand’s primary identifying color. The company’s 25th anniversary emblem, which uses “tech blue” and “sunshine red,” was described as symbolizing the fusion of technology and humanistic values, as well as conveying “infinite vitality and energy” for the company’s future. [5]
Typography and Design
The LONGi wordmark uses a clean sans-serif typeface, with the stylized lettering registered as a trademark. The U.S. trademark registration describes the mark as “stylized wording ‘LONGi'” with no additional design elements. [1] The simple typographic approach keeps the brand name as the sole visual element of the corporate identity.
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