I have started my assembly of the HX108-2 around the front end & I have been gratified to hear it heterodyne with the oscillator of a Benkson 323 adjacent to it exactly as samoca58 did.
So now I am going to assemble the rest of the IF strip to the detector.
There are differences in the arrangement of the coils: In mine it is red, yellow, white, black. The red & yellow are rather dull but you can tell perfectly well what they are.
The printed sheet is dated 2018.8.6, which I take to mean 8th June 2018.
Their Web site link works. Be careful to add the .cn on the end or you get a hard-core porn site.
The zxradio.com.cn site is not in English & I don't know if there are English pages.