Hello
Sorry to hear negative comments already.
This is a quote from our website:
"About us
Our company
Dark Blade Asic is a company based in Jiangsu, China. We create, develop and sell bitcoin mining equipment.

We are buying top-rated designs and we are also creating our own."


The design is not designed by us, but it is bought. Still it is re-modified and the 4 chips are our own.