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NAPCO Security Technologies Inc develops, manufactures, and distributes security products, including access control systems, door security products, intrusion and fire alarm systems, alarm communication services, and video surveillance products for commercial and residential use. The Company also provides wireless communication services for intrusion and fire alarm systems. Its products include Intrusion and Access Alarm Products, Door Locking Devices and Services. The products are used for commercial, residential, institutional, industrial and governmental applications and are sold principally to independent distributors, dealers and installers of security equipment. The Company generates maximum revenue from the United States.

Sandisk is one of the five largest suppliers of NAND flash memory semiconductors globally. Sandisk is vertically integrated, producing substantially all of its flash chips at manufacturing sites across Japan via a joint-venture framework with Kioxia. Sandisk then repackages most of its chips into SSDs for consumer electronics, external storage, or cloud storage. Sandisk was formerly a piece of Western Digital for nine years (after being acquired in 2016) and was spun off as an independent company in 2025.