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Knowles Corp is engaged in the manufacturing of micro-acoustic microphones and balanced armature speakers, audio solutions, high-performance capacitors, and radio frequency filtering products. It operates in three segments; the Precision Devices segment specializes in the design and delivery of high-performance capacitor products and RF solutions, Medtech & Specialty Audio segment designs and manufactures microphones and balanced armature speakers used in applications and the Consumer MEMS Microphones segment designs and manufactures micro-electro-mechanical systems microphones and audio solutions used in applications. The majority of its revenue comes from the Consumer MEMS Microphones segment.
Daqo New Energy Corp is a polysilicon manufacturer based in China. The company manufactures and sells high-purity polysilicon to manufacturers who use it to make ingots, cells, and modules for solar power solutions. The polysilicon is packaged to meet crucible stacking, pulling, and solidification needs. All of the company's revenues come from the People's Republic of China.