We provide advanced optical packaging and precision optical, electro-mechanical and electronic manufacturing services to original equipment manufacturers ("OEMs") of complex products such as optical communication components, modules and sub-systems, industrial lasers, automotive components, medical devices and sensors. We offer a broad range of advanced optical and electro-mechanical capabilities across the entire manufacturing process, including process design and engineering, supply chain management, manufacturing, complex printed circuit board assembly, advanced packaging, integration, final assembly and testing. Although we focus primarily on low-volume production of a wide variety of high complexity products, which we refer to as "low-volume, high-mix," we also have the capability to accommodate high-volume production. Based on our experience with and positive feedback from our customers, we believe we are a global leader in providing these services to the optical communications, industrial lasers and automotive markets.
Our customer base includes companies in complex industries that require advanced precision manufacturing capabilities, such as optical communications, industrial lasers, automotive and sensors. Our customers in these industries support a growing number of end-markets, including automotive, biotechnology, communications, materials processing, medical devices, metrology and semiconductor processing. Our total revenues for the year ended June 28, 2019 ("fiscal year 2019") increased by $212.4 million, or 15.5%, from $1.37 billion for the year ended June 29, 2018 ("fiscal year 2018") to $1.58 billion for fiscal year 2019. Our revenues from lasers, sensors and other markets as a percentage of total revenues decreased from 27.1% in fiscal year 2018 to 25.2% in fiscal year 2019, while our revenues from optical communications products as a percentage of total revenues increased from 72.9% in fiscal year 2018 to 74.8% in fiscal year 2019.
In many cases, we are the sole outsourced manufacturing partner used by our customers for the products that we produce for them. The products that we manufacture for our OEM customers include: