Input 90 crude oil
Output 50 rubber + 50 plastic.

At the beginning ratio is not really 50/50, you have to wait till last rafinery have 200 plastic inside. Or put there 200 plastic as income to have exact 50/50 production from beginning.

No mods needed. Tested on Update 7 Build 211839.

Don't be lazy and rate my blueprint by clicking on stars! Other players also want to know, if this is usable, or trash. Thanks.

All my blueprints https://satisfactory-calculator.com/en/blueprints/index/index/idU/30791/user/Katoo
All my megaprints https://satisfactory-calculator.com/en/megaprints/index/index/idU/30791/user/Katoo