Hi Rupam,
The diagram seems to indicate a Premium Quality CD made as per the Red book Standard. If the Red Book standard was not followed, it would not read on a regular CD player.
That said, I am a fan of premium CDs.
The XRCD ( another similar premium CD label) does sound Consistently different, on my system and to my ears ( YMMV

)
I believe that SHM =
Steve Hoffman Mastering ie mastering by Steve Hoffman.
These CDs DO sound distinctly different... probably because of a slightly different tonal balance used by Steve Hoffman.... To my ears the sound is more incisive and a forceful, with a bit bit of treble edge. I even have these CDs on my HDD and the rip too sounds different.
Most Boutique labels remaster there CDs to present a particular sonic signature. they charge a premium for their products, and they DO sound different .... though you may or may not like their "house sound."
Therse include JVC's XRCDs, SHM & MFSL ( Music Fidelity Sound Labs).
Incidentally, SHM also sels some of their CDs in pairs... One CD regiular and the other identical music SHM CD. It is their way to reaffirm their faith that the buyer WILL find an audible difference.