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Smoke alarm

US $1.8B Global $8B

Polycarbonate: PolycarbonatePrinted circuit board: Printed circuit boardMicrocontroller: MicrocontrollerSensor: Photoelectric sensorPiezo speaker: Piezo speakerTest switch: Test switchPower: Alkaline core

Smoke alarm High · Import 50% $12 · Q60 55 Polycarbonate Medium · Import 45% $2.8K · Q60 46 − Natural gas Low · Import 0% $2.5M · Q50 5 Crude oil Medium · Import 31% $70M · Q50 35 Printed circuit boa… High · Import 90% $40 · Q70 87 − Copper High · Import 33% $9K · Q60 42 + Fiberglass cloth Medium · Import 56% $1.8K · Q55 55 + Microcontroller Critical · Import 95% $4 · Q40 96 − Silicon wafer Critical · Import 83% $250 · Q80 87 + Chip packaging High · Import 90% $1 · Q70 87 + Photoelectric sensor High · Import 50% $3 · Q70 55 Sensor 1/2 − Silicon wafer Critical · Import 83% $250 · Q80 87 + Polycarbonate Medium · Import 45% $2.8K · Q60 46 − Natural gas Low · Import 0% $2.5M · Q50 5 Crude oil Medium · Import 31% $70M · Q50 35 Piezo speaker Medium · Import 82% $1 · Q50 75 − Piezo ceramic Medium · Import 68% $8K · Q60 64 + Copper High · Import 33% $9K · Q60 42 + Test switch Medium · Import 49% $0 · Q55 49 − Polypropylene Medium · Import 22% $1.3K · Q50 28 + Copper High · Import 33% $9K · Q60 42 + Alkaline core Medium · Import 62% $0 · Q55 60 Power 1/2 − Zinc High · Import 22% $2.8K · Q50 33 + Manganese High · Import 100% $1.5K · Q50 95 + Steel Low · Import 20% $700 · Q55 21 +
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