"Apple is likely to introduce 'iWatch' in 2014. From our channel checks, Inventec is the major assembly source for 'iWatch', with about 60 percent of order allocation," said CIMB Securities analyst Wanli Wang in a report.
CIMB projects 63.4 million units of "iWatch" shipments in the year after its launch with an average price of around $199, while the "iWatch" project is estimated to contribute 19 percent of Inventec's earnings in 2014, Wang said.
Taiwan's Apple Daily newspaper also said Quanta Computer was splitting the "iWatch" orders with Inventec by taking 40 percent of order allocation, citing unnamed sources.
Inventec and Quanta have both declined to comment.
Competition in the "smartwatch" market is heating up, with Google, Microsoft and Samsung Electronics racing to develop their own watch-type computing devices.
Apple has already filed trademark applications for an "iWatch" in many countries.