Apple Inc is working with more Chinese suppliers to produce its latest iPhones, Japan's Nikkei newspaper said on Wednesday, as a tech feud stemming from a trade war with the United States prompts Beijing to strengthen domestic firms.

Luxshare Precision Industry Co Ltd is set to build up to 3% of the upcoming iPhone 13 series, and two firms it acquired last year will supply key components and parts for the latest iPhones, the paper said, citing sources familiar with the matter.

Lens Tech Co Ltd will supply metal casings and Sunny Optical Tech Group Co Ltd will supply rear camera lenses, the paper said on its website, with BOE Tech Group Co Ltd also supplying components.

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Apple did not immediately respond to a Reuters request for comment.

Luxshare has won orders over its Taiwanese rivals Foxconn and Pegatron Corp, and will start building the iPhone 13 Pro this month, the paper said.

Reuters reported that Foxconn set up a task force to fend off the growing clout of Chinese electronics manufacturer Luxshare to study it the company was supported by any Chinese government entity, among other concerns.

Last month, Apple forecast slowing revenue growth as a global chip shortage starts to affect iPhone production.