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Beyond Infrared Blocking and Ionic Adsorbents: Shanghai Langyi’s Functional Materials Portfolio

Introduction When global manufacturers search for a functional additives supplier in China, the requirement is rarely limited to one individual product. Modern polymer, coating, film, photovoltaic, battery, semiconductor and fiber applications often require multiple properties to be improved simultaneously—from hydrolysis resistance and weatherability to crosslinking, antimicrobial performance, dispersion and long-term material stability. Founded in 2010, Shanghai Langyi Functional Materials Co., Ltd. focuses on specialty functional additive solutions and provides functional differentiation services across multiple industrial value chains. The company integrates R&D, manufacturing and sales, supported by operations in Shanghai and Shandong. While international customers may already know LANGYI for technologies

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August 19, 2026
Product Knowledge

PET Base Film for PCB Dry Film Photoresist: What It Does and How to Select It

Introduction When engineers discuss dry film photoresist for printed circuit board manufacturing, attention usually goes first to the photosensitive resin. However, another material plays a critical supporting role throughout coating, handling and exposure: the PET base film. In dry film resist systems, a photosensitive resin layer is laminated onto a light-transmitting polyester base film, while a polyethylene cover film is typically used on the opposite side for protection. During PCB processing, the cover film is removed, the photosensitive layer is laminated onto the circuit-board substrate, and UV exposure is carried out through the PET base film before the carrier is

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August 18, 2026
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Food-Grade Sodium Bicarbonate in Food Processing: Functions, Grades and Selection Guide

Introduction Food manufacturers often think of sodium bicarbonate simply as baking soda. In industrial food processing, however, its role can be much broader. Food-grade sodium bicarbonate can function as a leavening ingredient, acidity regulator, processing aid and formulation component in bakery products, beverages and other food-processing systems. LANGYI’s current food-grade sodium bicarbonate portfolio includes Standard Food Grade, Low-Salt Grade and Fine-Powder Grade, designed for different processing requirements involving general food production, chloride control, dissolution and dispersion. For manufacturers, choosing the right grade is therefore not only a question of chemical purity. Particle size, chloride specification, dissolution behavior, moisture control and

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August 12, 2026
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Hong Kong Langyi & Shanghai Langyi: Connecting Global Markets with China’s Functional Materials Manufacturing Strength

Introduction As global manufacturing continues to upgrade, overseas customers sourcing functional materials and specialty chemicals from China are looking for more than competitive pricing. For industries such as automotive, semiconductor packaging, functional films, photovoltaics, high-performance resins, new energy, and other advanced manufacturing sectors, a reliable long-term materials partner must also provide: Stable manufacturing capabilities Continuous investment in R&D Strong understanding of customer applications Reliable quality control Technical service and formulation support International business and supply-chain capabilities Hong Kong Langyi Technology Co., Limited was established to serve this international role. Hong Kong Langyi is a wholly owned subsidiary of Shanghai Langyi

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August 12, 2026
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Ion Trapping Agents for Semiconductor Packaging: Controlling Ionic Impurities in Epoxy Encapsulants

Introduction As semiconductor packages become smaller, denser, and more highly integrated, material purity becomes increasingly important to long-term device reliability. Epoxy molding compounds (EMCs), liquid encapsulants, underfills, adhesives, and other polymeric packaging materials protect semiconductor devices from mechanical stress and environmental exposure. However, these materials can also contain trace ionic impurities originating from raw materials, synthesis residues, additives, fillers, processing steps, or external contamination. Among these impurities, mobile ions such as chloride (Cl⁻), sodium (Na⁺), potassium (K⁺), and other ionic species can become problematic when moisture, electrical bias, and elevated temperature are present. Research on microelectronic encapsulants has shown that

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August 7, 2026
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How to Reduce Heat in PET Film

Introduction Polyethylene terephthalate (PET) film is widely used in automotive window films, architectural films, optical films, protective laminates, and other functional film applications because of its excellent mechanical strength, dimensional stability, transparency, and processability. However, when PET film is used in applications exposed to sunlight—particularly automotive glazing—controlling solar heat becomes an important technical challenge. A transparent film must allow sufficient visible light to pass through while reducing the amount of solar energy entering the vehicle or building. Simply making the film darker is not always an effective solution because visible-light absorption and infrared heat management are two different issues. One

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August 5, 2026
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Ionic Adsorbents for High-Reliability Electronic Encapsulation

Ionic Adsorbents for High-Reliability Electronic Encapsulation Controlling Ionic Impurities in Sensitive Electronic Materials Modern electronic devices depend on increasingly compact circuits, finer conductive pathways and high-performance encapsulation materials. As electronic components become smaller and more complex, even trace levels of ionic impurities can create long-term reliability risks. Ions such as sodium, chloride and bromide may originate from raw materials, catalysts, fillers, processing aids or environmental contamination. Under heat, humidity and electrical bias, these mobile ions can migrate through a resin or adhesive system and contribute to corrosion, insulation deterioration and electrical failure. Ionic adsorbents are designed to selectively capture undesirable

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July 31, 2026
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Selective Solar Management for Architectural Window Films

Application of Infrared-Blocking Agents for Optical Clarity, Thermal Control, and Long-Term Durability Abstract Architectural window films are designed to reduce solar heat gain while maintaining natural daylight, visual transparency, and indoor comfort. In practical formulation and coating development, however, improving infrared-blocking performance may also lead to reduced visible light transmittance, increased haze, color deviation, coating temperature rise, dispersion instability, and reduced outdoor durability. The application of an infrared-blocking agent should therefore not be evaluated solely by the infrared rejection measured at a single wavelength. Product development should consider the complete solar spectrum, nanoparticle dispersion, resin compatibility, coating thickness, glazing configuration,

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July 23, 2026
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Infrared Blocking Materials: A Science-Based Approach to Transparent Heat Insulation

Infrared Blocking Materials: A Science-Based Approach to Transparent Heat Insulation 紅外線阻隔材料：透明隔熱應用中的科學化材料方案 Why Infrared Blocking Matters In modern buildings, vehicles, and functional films, one of the key challenges is how to reduce heat from sunlight without sacrificing transparency. Sunlight contains ultraviolet, visible, and near-infrared radiation. Recent studies on energy-saving coatings point out that near-infrared radiation accounts for a significant portion of solar heat, and ordinary glass lacks spectral selectivity because it allows both visible light and near-infrared light to pass through. Therefore, transparent heat-insulation materials need to selectively block near-infrared radiation while maintaining high visible light transmittance. This is exactly the

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July 2, 2026
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Shanghai Langyi Functional Materials Accelerates Innovation to Support Global Advanced Materials Industry

As global industries continue to pursue sustainable manufacturing, advanced polymers, and high-performance functional materials, Shanghai Langyi Functional Materials Co., Ltd.*is strengthening its commitment to technological innovation and international cooperation. Founded in 2010, Langyi has developed into a technology-driven enterprise integrating research and development, manufacturing, and global marketing. With R&D and production bases in Shanghai and Shandong, the company focuses on delivering specialty functional additives and differentiated material solutions across the industrial value chain. Langyi’s product portfolio covers a broad range of advanced functional materials, including anti-hydrolysis additives, chain extenders, infrared reflective materials, antibacterial additives, ion adsorbents, water-based curing agents, and other

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June 26, 2026