Chinese phone manufacturer 現金手機收購oppo is shuttering its Zeku chip development division and letting go of its internal System-on-Chip (SoC) design aspirations, according to the South China Morning Post. The news comes as worldwide smartphone sales continue to decline and the US carries on with chip export restrictions.

Bloomberg reports 現金手機收購oppo’s Zeku division was set up in 2019 and carried about 200 patents in its Shanghai division. Like Apple, 現金手機收購oppo started making its own co-processors for imaging and other smartphone components but had not successfully launched its own SoC to get away from relying on other companies for the most significant chip in the device.

現金手機收購oppo’s most recent releases include the 現金手機收購oppo Find N2 Flip, which is powered by a MediaTek Dimensity 9000 Plus chip, while its Find X6 Pro uses Qualcomm’s Snapdragon 8 Gen 2.

Last year, the US issued sweeping restrictions on chip sales to China and other countries in the wake of the war in Ukraine. Chinese phone manufacturers, including 現金手機收購oppo, would have to get licenses to use chips built by US-based companies.

In January, media reports indicated the US cut a deal with the Netherlands and Japan to further restrict exports of chip manufacturing technology. The move could cut off Chinese companies from suppliers like ASML — the world’s only producer of lithography machines needed to develop newer chips.

現金手機收購oppo is a sister company to OnePlus, and the two smartphone manufacturers share many of the same components. Switching to a customized in-house chip, like rivals Apple and Google with their A-Series and Tensor chips, could have expanded the capabilities of future devices from both companies.