What is the relationship between Apple Inc and iPhone in the context of the input sentence. Choose an answer from: product/material produced; manufacturer; distributed by; industry; position held; original broadcaster; owned by; founded by; distribution format; headquarters location; stock exchange; currency; parent organization; chief executive officer; director/manager; owner of; operator; member of; employer; chairperson; platform; subsidiary; legal form; publisher; developer; brand; business division; location of formation; creator.

TOKYO (Reuters) - Japan Display Inc's new chief executive said on Thursday the screen maker's "biggest client", widely understood to refer to Apple Inc (AAPL.O), is increasing orders ahead of the expected launch of a new iPhone this month.

Answer: product_or_material_produced