You all do know the chemical reaction between Polyvinylcloride, (PVC) and Butane? The Butane is a solvent, PVC is a oil base product......... You figure it out! Really want to smoke this trash?
It is all trash - made from trash, and with the cheapest possible components....
All large operation I have been to use PVC and the cheap Power 5x butane.
If you have a hook-up, you can get a master case of Power 5x for $199 (96 cans)
Sometimes people will use Collibri or a Vector 7x for a personal run, but it costs a lot, and when questioned the BHO manufacturers say that Power 5x is "good enough for custies".