Product Trends
What is actually selling across the seven core categories, and why the demand moved.
Read the trend reportsChina Product Discovery, Teardown and Sourcing Insights
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Teardown Reports
Full disassembly, measured output and component identification on the units we evaluate.
Browse the teardowns -
Cost Analysis
BOM cost, landed cost and the margin left after both, with the assumptions stated.
Read the cost analysis -
Buying Guides
Selection guides for importers, brands and procurement — what to check before you commit.
Read the guides -
Supplier Insights
Factory capability, verification findings and the sourcing risks that show up after the quote.
Read the supplier notes
Every article follows the same structure: what the product is → what is inside it → what it costs → how BaiSourcing sources and verifies it. Reports are released continuously from current bench work — ask us for the report on the model you are evaluating.
Selected reports
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How to Review a Supplier Quote: A Complete BOM Audit Guide for China Sourcing
Learn how to review Chinese supplier quotations with a BOM audit approach. Identify hidden component costs, verify specs, and make data-driven sourcing decisions before placing volume orders.
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TWS Earbuds Teardown & BOM Analysis: What Separates a Reliable Product from a Cheap Copy?
TWS earbuds teardown and BOM cost analysis ($3.80-$24.00): Comparing Bluetooth SoC chipsets, button cell battery safety, acoustic drivers, and buyer audit checklist.
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Multi-Function Air Styler OEM Sourcing Guide: Motor Airflow, Thermal Safety & Attachment Tooling
Multi-function air styler OEM sourcing guide: 110k RPM BLDC vs DC motors, Coanda attachment tooling, NTC safety, and BOM costs ($11-$32).
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How to Source Blind Box Toys & Designer Collectibles from China: Dongguan vs. Yiwu Supply Chains
China blind box sourcing guide: Dongguan vs Yiwu factories, PVC vs plush manufacturing, EN71/ASTM compliance, mold costs, and verified collectibles.
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Electric Shaver OEM Sourcing Guide: Rotary vs Foil, BOM Costs & Factory Audits
Electric shaver OEM sourcing guide: rotary vs foil blade systems, BOM cost benchmarks ($4.50-$22), Ningbo vs Wenzhou factories, and IPX7 audit protocols.
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ICR vs IMR vs INR Batteries: Hardware Sourcing Guide
Three lithium-ion cells can have the same cylindrical shape and a similar 3.7V marking. But that does not mean they can safely power the same.
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RMB 5 vs RMB 8 vs RMB 10 Tire Inflator Motors: What Changes Inside
Two portable tire inflators can use almost identical housings while hiding completely different motor-and-pump assemblies inside. In this.
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Hair Dryer Temperature Test: Is 152.2°C a Buyer Risk?
The $199 hair dryer reached 152.2°C. The $29 model stopped at 110.6°C. Does that make the expensive hair dryer more powerful—or does it create a.
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Waist Fan Airflow Test: Why Higher RPM Does Not Mean More Airflow
The cheapest waist fan in this comparison produced the highest estimated airflow. We tested three wearable waist fans priced from RMB 60 to RMB.
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Waist Fan Cooling Plate Test: More Airflow Does Not Mean Colder Contact
The waist fan with the highest estimated airflow was not the product with the coldest contact surface. We compared three wearable waist fans.
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$199 vs $29 Hair Dryer: Wind Speed Test & Teardown
A $199 hair dryer costs almost seven times as much as a $29 model. Does it produce seven times the airflow—or even twice as much? We tested both.
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Three Waist Fans Tested: Does a Higher Price Mean Better
Three wearable waist fans looked broadly similar from the outside. Their retail prices, however, were very different: Sample A: RMB 60 Sample B:.
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Brushed Motor vs Brushless Motor: What’s the Real
A supplier calling a motor “brushless” does not tell you the full story. In this teardown, I put several common brushed and brushless motors.
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Car Air Pump Teardown: $12.99 vs $19.99 vs $24.99: What Your Money Actually Buys
Three Best-Selling Car Air Pumps. Three Price Points. Three Completely Different Machines. We sourced three of the most popular portable car air.
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Cooling Fan Teardown: $3 EXW Fan Labeled 3000mAh, Tested
$3.00 EXW. $2.00 BOM. 3000mAh Claim. 800mAh Reality. We sourced a handheld cooling fan at $3.00 EXW from a manufacturer in the Zhejiang cluster.
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$5 vs. $50 Toothbrush: The Hidden PCBA Gap in Electric
Decoding the Brain of the Electric Toothbrush In the consumer electronics sourcing world, the PCBA (Printed Circuit Board Assembly) is where the.
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Portable Fan Teardown: The $0.50 "Premium" Illusion vs. Real Engineering Quality
The Deception of Visual Design in Sourcing In the Yiwu wholesale market, anything is possible—including a product that looks like a $20 gadget.
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Hair Dryer Motor Supplier Evaluation: Why 100,000 RPM Does Not Always Mean Better Performance
Hair dryer motor supplier evaluation: Why 100,000 RPM claims hide $8-$12 BOM cuts, plastic impeller warping, and how to verify turbine BLDC motors before ordering.
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Hair Dryer PCB Comparison: Dyson Copy vs Genuine Brand
Two PCBs. Same Shape. Same Voltage. Completely Different Safety. In our previous Dyson copy teardown, we found no ground wire and no thermal.
