Following Imagination Technologies and Qualcomm facing the loss of revenue from Apple as the company looks to bring more chip design in-house, another Apple supplier is also facing a potentially significant loss of business.

InvenSense Inc currently makes most of the motion sensors for the iPhone, but Apple is now said to have placed orders with German firm Bosch …

Bloomberg reports that sales to Apple make up more than half the company’s revenue.

The motion sensors contain both gyroscopes and accelerometers.

Apple accounts for about 60 percent of InvenSense revenue, according to Bloomberg supply chain analysis.

It’s thought that the order with Bosch may account for as much as half of Apple’s total orders. The company already makes barometric pressure sensors for the iPhone.

InvenSense hinted at the risk of losing Apple business as long ago as 2014.

InvenSense is currently attempting to negotiate a sale to TDK.

Statista recently listed six major companies that rely on Apple for at least half their revenue. Apple generally likes to have at least two suppliers for components, both to reduce risks and increase its negotiating strength.