Welcome to STR

Welcome to STR Holdings, Inc.

Specialized Technology Resources is a worldwide leader in Solar Panel Encapsulation and Quality Assurance Services. Our Solar business is committed to providing our customers with environmentally-responsible solutions through continual research & development and innovation. Our QA business is a leader in consumer product quality assurance and responsible sourcing services.

A Message From the Chairman

STR has earned a strong reputation globally for high quality, and also for taking a principled approach to the work it does. We set the strongest standards for integrity within STR and we lead by example, setting a similar standard of excellence industry-wide.

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STR Solar

STR's Solar Encapsulants Manufacturing business is one of the world's leading providers of high quality, superior performance solar encapsulants – marketed under the trade name Photocap® since 1979 – for the photovoltaic module industry. With over 80 customers around the world, including many of the top names in the solar module business, STR has developed many of the major innovations in the industry.

STR Quality Assurance

STR's Quality Assurance Services business is one of the top providers of quality testing, audit, inspection, and responsible sourcing services in the world. We work with over 6,000 manufacturers, importers, raw materials suppliers, and retailers around the globe to ensure that they have the highest level of confidence in the quality, safety, and social standards of their products and systems.