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[liudengyuan]

I am willing to exchange a technique with a pulse detector to identify iron. For example, other electronic products, or beauty freckles, or breast enhancement, etc., if you are interested. Please send me an email. thank you all

[liudengyuan]

I have a pulse detector that discriminates against iron and is willing to exchange other technologies, such as other electronic products, or cosmetic freckles, breast enhancement, etc.

[RS_Phil]

What circuit is that?

[liudengyuan]

Very good circuit, discriminate iron is 100%

[kt315]

What circuit is that?

QED. every chinese writing me on email got the schematic. so probably they had learning principle and now offer
QED in new package.

[liudengyuan]

no

[Qiaozhi]

Liudengyuan - This is the wrong place to request beauty products. No-one here has what you want.

I have moved this thread from the Tech Forum to Buy-Sell-Trade.