In the context of the input sentence, determine the relationship between 'Asus' and 'smartphone'.
Options: subsidiary, founded by, chief executive officer, product/material produced

In order to woo this fast-growing mobile phone-cum-camera wielding audience, the Taiwanese device maker Asus has debuted its latest device, the ZenFone 2 Laser, which promises to have the best smartphone action camera.
product/material produced