The new bottom tube with the new welded BB mounting which is the same as the one used on Strida MAS is now used on all new Strida 5.2 in Hong Kong.
Is it heavier than before?
It looks very similar to the one for MAS I got.
But handle stem part looks same as existing 5.x which is different from MAS.
Nice BB, pity about the (limited) adjustable seat mounting 
Interesting, I wonder if that has anything to do with some of the cases of the bottom tube breaking at or near the front weld.
did anyone try order the new bottom tube from ming? or is it even possible?