Rated 5 out of 5 stars.
If you cracked the screen on your Lenovo Y70-70 Touch (model 80DU), this is the replacement part.

It's the full LCD and digitizer assembly, including the glass touch layer.

The model number is LP173WF4 SP F1, and the MPN is G632609.
It's a 17.3-inch screen with Full HD resolution (1920x1080).
It's IPS technology, so good viewing angles, and it's an LED LCD with an EDP connector.
It has 30 pins, and the connector is on the bottom left.
Important to know: it's a touch screen assembly, so the glass is transparent.

It does not support a smart pen.

Also, the seller has a policy about dead pixels—there might be 1 to 5, and returns have a restocking fee.

If your existing screen is dim or white, don't buy this, it won't fix that.
This is just for a physically cracked or non-working touch/display.
New old stock, unbranded replacement.
Read the policy carefully before buying.
