Kraig Biocraft Laboratories Inc (KBLB)

[first mike]

They also succeeded in producing a miniature version of spidroin that can be mass-produced with the help of genetically modified bacteria.

As usual, those whose only tool is bacteria immediately find that bacteria CAN NOT Produce Spidroin it is simply too large (too long, too high a molecular weight) for bacteria.
So, being minimally inventive, their next step is to cut spidroin up into small short snippets that CAN be produced in bacteria.
Although they keep talking about the great strength and toughness of spider silk, their "miniature versions" do not have and can not have those properties, as they are a direct result of the very high molecular weight, the very LONG chain lengths, of true spidrion.
Thus this group, Amsilk, SpiberAB, Spiber(JP), araknitec, and almost all others have lost any chance of producing STRONG fibers even before they have begun.

Mike L.