When the current production period is up (a bit more than one month iirc) then I'll probably switch the carbonide making into making sylramic fibers.
At the moment carbonides is balooning in volume on the market so price is falling, recovered slightly this weekend but will likely drop again, and the isk is begining to not be worth the effort.
Not a massive difference in profitability at the moment but given that carbonides might continue to fall and the barrier to entry there is very low it is probably worth switching.