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SR2515 is a single-component silicone structural sealant specially formulated for structural bonding and sealing in glass, stone (marble, granite), aluminum curtain walls, glass skylights, and metal‑structure projects. The product exhibits excellent weathering resistance, maintaining superior performance even when exposed to harsh conditions such as sunlight, rain, wind, snow, and extreme high or low temperatures.

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SR2525 is a silicone structural sealant specially formulated for structural bonding and sealing in glass curtain walls, dry‑hung stone curtain walls, aluminum panel curtain walls, glass skylights, and metal structure projects. It features a two‑component system: Components A and B are mixed by a dedicated dispensing machine and applied to the joint, where they cure to form a stable elastomer. The product exhibits high bond strength and excellent resistance to UV aging, maintaining superior elasticity and adhesion even after prolonged exposure to harsh weather conditions such as sunlight, rain, wind, and snow.

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APP is atactic polypropylene, a byproduct generated during polypropylene production. Starting in the 1970s and 1980s, both domestically and internationally, researchers began exploring ways to comprehensively utilize this byproduct. Over time, significant breakthroughs were achieved in areas such as asphalt modification, adhesives, rubber–plastic modification, and coating formulations, establishing APP as a highly regarded specialty chemical. As production processes evolved, the amount of APP generated as a byproduct declined, prompting several companies in Europe and North America to adopt dedicated manufacturing technologies for its targeted production, now reaching scales of tens of thousands of tons per year. However, nomenclature varies across regions, with terms such as APP (atactic polypropylene), APAO (amorphous α‑olefin copolymer), and APOs (“amorphous polyolefins”) all referring to products of the same class.

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Drawing on years of accumulated expertise and cutting-edge synthesis technologies, SUNSTAR, guided by the principles of safety, comfort, and environmental sustainability, diligently researches and manufactures a comprehensive range of sealants and adhesives for exterior and interior applications, designed to meet the diverse needs of the construction industry.

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Sunstar’s single-component interior adhesive exhibits excellent bonding performance on materials such as PP and ABS, even without surface treatment. Moreover, it contains no organic solvents like benzene, toluene, xylene, or formaldehyde, making it an environmentally friendly and safe adhesive. Primarily used for bonding interior components such as automotive seats, door panels, headliners, steering wheels, and instrument panels, this adhesive is widely adopted by major automakers and interior‑trim manufacturers thanks to its superior performance, earning consistent praise from users.