Zhejiang Fenzi Paints and Sealants Co., Ltd. has officially become a member of the CSTA. The company specializes in the production and sale of specialty sealing materials, specialty sealant cements, and coatings, and has already established cooperative relationships with numerous domestic mirror suppliers. In May 2024, Fenzi completed the acquisition of Sherwin-Williams’ solar mirror-coating business, bringing 25 years of Sherwin-Williams’ high-performance solar mirror-coating expertise under its umbrella. Now, Fenzi officially enters the CSTA,leveraging its “Mirror Armor” and “SOLSHIELD ECO™ Light Shield” solar coatings, the company is poised to inject new momentum into the high-quality development of CSP in China and around the world.
With more than 80 years of brand heritage, the Italian Fenzi name is synonymous with innovation. The “Mirror Armor” solar series—an environmentally friendly energy material—represents the culmination of years of research and development by the Fenzi Group. Backed by robust technical strength and a passion for innovation, Fenzi’s solar mirror coatings are precisely engineered to meet the rigorous demands of solar mirrors. Available in multiple formulations, all grades pass stringent weathering and abrasion tests, satisfying the exacting requirements of state-of-the-art solar technologies.
As the Fenzi Group’s first production base in China, Fenzi supplies mirror-back anti-corrosion coatings, high-temperature enamels, low-temperature baking finishes, polysulfide sealants for insulating glass, butyl sealants for insulating glass, aluminum spacers, stainless-steel spacers, and warm-edge spacers. By combining its own formidable capabilities with Sherwin-Williams’ 25 years of R&D achievements, Zhejiang Fenzi has delivered projects spanning five continents—from solar concentrator plants in Spain to desert installations in Mexico, from the Gobi Desert in northwest China to the high plateaus of South Africa—providing coatings for more than 2 GW of solar-thermal capacity worldwide. Over time, its products have proven their dual value of “long-lasting protection” and “high-efficiency power generation.”
Zhejiang Fenzi (Sherwin-Williams) supplied solar mirror coatings for the Jinta Zhongguang Solar “Solar-Thermal + PV” pilot project.
Today, leveraging its core competency in solar-reflective mirror coatings, Zhejiang Fenzi offers end-to-end capabilities spanning material R&D, process optimization, and system integration, serving as a key guarantor of reliability for solar-thermal power stations.
In terms of capacity, the company’s Jiaxing plant has an annual output of 5,000 tons of mirror-back coatings, while a newly built 20,000-ton facility in Anhui Province is scheduled to come online in 2025, meeting the coating needs of 10 GW of solar-thermal capacity.
As a participant in drafting the national standard “General Technical Requirements for Domestic Mirror Products,” the “Mirror Armor” solar series is suitable for both copper and copper-free mirrors and is available in lead-free and lead-containing variants, offering multiple application methods to suit a wide range of solar products.
Moreover, Zhejiang Fenzi provides 7×24-hour professional pre-sale, in-sale, and after-sale services, delivering expert technical support to every customer.