1. Broadcom (US)
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2. Atheros (US, acquired by Qualcomm)
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3. Marvell (Marvell, USA)
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4. TI (Texas Instruments, USA)
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5. Ralink (Leiling, Taiwan, acquired by MTK)
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6. Realtek (RealTEK, Taiwan)
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7. Shanghai Lexin
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8. Beijing New Shoreline
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9. Beijing Shengdewei
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10, Shenzhen South Silicon Valley
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11. Shanghai Lanqi
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12. Shanghai Qingke (Shipping WiFi module)