Solar developers, glass processors, facade consultants, and distributors are all looking for the same thing: glass surfaces that do more than look good. They need to produce more energy, stay cleaner for longer, and reduce the heat load inside buildings and vehicles. At Yucheng Special Glass Co., Ltd., we focus on coating technologies that address those practical pain points, not just laboratory targets. Our current portfolio brings together anti-reflective self-cleaning coatings for PV glass and high-performance solar control coatings for architectural and automotive glass.
Dual-Function Coating for PV Module Glass
Most PV module glass today carries an anti-reflective (AR) coating because higher light transmission translates directly into more power. In the familiar 2 mm rolled glass route, uncoated glass may transmit around 91.5% of light, while AR-coated glass can reach approximately 93% to 93.5%. Every one percent gain in transmission can support a meaningful improvement in module output. That is why AR coating is now a standard requirement rather than an option.
What standard AR glass does not provide is long-term self-cleaning. Our answer is a two-in-one coating liquid that combines anti-reflective light enhancement with hydrophobic self-cleaning performance. It is designed for use directly at PV glass production plants, so it can be deployed through existing glass processing lines rather than depending only on our own roller-coating capacity in Qinhuangdao. The coating is engineered for a film hardness above 5.5H and a water contact angle above 120 degrees. For module makers, that means the mandatory AR function and a durable self-cleaning function can be delivered in one coating step.
Why Self-Cleaning Matters in Real Solar Assets
A PV module is an electrical circuit, and its glass surface has to stay reasonably clean to perform. Chemical fallout near industrial plants, cement dust, bird droppings around fishery-solar sites, and salt spray on offshore projects can all reduce generation and shorten module life. In heavily polluted areas, modules that are not cleaned regularly may last only three to five years. Cleaning robots are one answer, but they are expensive and mainly address certain types of dust. In markets with high labor costs, regular manual cleaning is often not economically practical, and modules may see service lives of around eight years.
This is the gap our coating is built to close. We spent years testing super-hydrophobic coating chemistry rather than promoting a photocatalytic hydrophilic approach. Photocatalytic hydrophilic surfaces need water and sunlight to break down organic matter, and they can only serve a limited range of scenarios. There is also a technical trade-off: pushing photocatalytic activity typically pulls down anti-reflective performance, while preserving anti-reflective performance limits photocatalytic activity. Our current focus is a super-hydrophobic coating that has passed our development and testing program and is ready for market introduction. We have also begun small-batch production with a module partner using our ARF coating technology.
The market signal is already visible. At a major Shanghai PV exhibition, leading module makers introduced self-cleaning PV modules at a premium to standard modules, which confirms that buyers will pay for lower maintenance and longer asset life. Our coating addresses the same need from the glass side, so it can be adopted by glass processors and module makers without redesigning the module.
Field Data from Post-Application Projects
For existing solar plants, we offer a post-application service in which our self-cleaning coating liquid is applied on site. This is aimed at assets already suffering from chemical contamination, dust, bird droppings, or other stubborn soiling, especially where maintenance is difficult or expensive. Our project summary table records post-application work and tests across a range of polluted sites. Monitored generation gains include 7.41% at a cultural-industry park affected by light floating ash and bird droppings, 7.33% at a machinery plant with oily metal dust, 11.97% at a container plant with heavy rust contamination, and 8.36% at another site with heavy rust. Additional small-scale tests at aluminum powder, iron powder, coal powder, heavy rust, and cement ash sites reported visibly lower contamination and easier removal of new soiling with water or rainwater.
Broader testing in target scenarios has indicated generation gains in the 10% to 25% range. In suitable projects, the value of incremental generation can cover the cost of application within about 18 months, after which the asset owner can continue to benefit from higher output and lower cleaning costs. This is not a generic panel-cleaning proposition. It is a coating-based maintenance strategy that can be applied to new and existing plants. Many competing resin-based products require hydrofluoric acid treatment of the glass surface before application, which damages the original anti-reflective layer and makes them unsuitable for new projects. Our coating approach is designed to work across both new and older installations.
Solar Control Glass for Buildings and Vehicles
Rising global temperatures have made solar heat gain a year-round issue for curtain walls, windows, and vehicle glazing. Common options include online silver-free Low-E, offline silver-based Low-E, plastic solar film, solar control paint, and body-tinted glass. Each has limitations. Some products block part of the infrared spectrum but still fall short on short-wave infrared rejection, so occupants still need blinds or shades. Some tinted glasses reduce heat but do not provide strong insulation.
Our Sun Shield Type 1 coating was developed to address both short-wave infrared at 780–1400 nm and long-wave infrared at 1400–2500 nm. In our supplied single-glass comparison, a 3 mm white glass with a single-side Sun Shield Type 1 coating reports an SHGC of 0.32, UV rejection of 77%, visible light transmission of 60%, short-wave infrared rejection of 99%, and long-wave infrared rejection of 100%. Visible light transmission is adjustable across a 60% to 85% range. By comparison, the same comparison set shows 5 mm white glass at SHGC 0.87 with 16% short-wave and 17% long-wave infrared rejection; 5 mm silver-free Low-E D50 at SHGC 0.53 with 62% short-wave and 70% long-wave rejection; and 5 mm F Green tinted glass at SHGC 0.63 with 65% short-wave and 58% long-wave rejection. The data illustrates why a coating that targets both infrared bands is important for real comfort, not just a single headline number.
The coating is an oxide film. As long as the base glass remains intact, the performance is theoretically not expected to degrade in the way that some applied films or organic coatings can. Our solar control glass can be used as monolithic glass, laminated glass, or insulating glass units. It can serve new curtain wall projects and retrofit work. Self-cleaning coating can also be combined with solar control for customers who want both heat rejection and easier maintenance on architectural or automotive glass.
Company Capabilities and Global Plans
Our product development follows four principles: target real market pain points with large addressable demand; achieve technical specifications that clearly lead competing products or create a genuinely new category; keep raw materials and costs controllable while adding sales value; and invest in marketing, brand building, and global expansion. Our main products are PV glass anti-reflective plus hydrophobic or hydrophilic self-cleaning coating technology, and architectural glass solar control and insulation coating technology with self-cleaning options. We also hold technical reserves in automotive solar control, hydrophilic and hydrophobic coatings, antibacterial coatings, AG 4A-level coating, and JG application technology.
We control the core coating liquid formulation and also have production line design and manufacturing capability. A flat glass roller-coating line is already in place, and a dip-pull coating line is under construction. In the future, we plan to establish operations in other Chinese provinces and overseas markets to reduce logistics and tariff costs, increase capacity, and support distributors and project partners more efficiently.
Work with a Coating Specialist
If you are a PV glass processor, module maker, solar EPC, O&M provider, glass distributor, facade contractor, or automotive glass supplier, we welcome a technical discussion about your market and project requirements. We can review coating fit, application route, sample testing, and supply models without making unsupported promises about performance in your specific conditions.
Contact: YUCHENG SPECIAL GLASS CO., LTD.
Contact: Ms. Liu / Maggie Lau
Phone: 17660616888
Email: yuchengglass2025@126.com
Website: www.yucheng-glass.com
Address: 16F, Building G, International Innovation Park, Laoshan District, Qingdao, Shandong, China
