Apple is ready to launch new ultra-thin MacBooks in the second half of 2016, but Taiwan component makers are seeing increasing competition for related component orders. US-based Amphenol has recently joined Apple's supply chain to supply hinges and is likely to take some orders away from existing partners Shin Zu Shing (SZS) and Jarllytec, according to sources from the upstream supply chain.

In addition, Taiwan-based Simplo Technology and Dynapack International Technology are seeing China-based Desay and Sunwoda Electronics compete for battery pack orders, the sources noted.

To achieve an ultra-thin design, Apple's new MacBooks adopt metal injection molding-made (MIM) hinges.

Amphenol is also a hinge supplier of Microsoft for its Surface Pro because of its special designed hinge.

Desay and Sunwoda Electronics have sent battery samples for testing but have not yet obtained any orders, the sources noted. The two China-based battery makers are currently suppliers for Apple's iPhone products.