塑料热成型之后的残余物会自机器上掉落下来，被碾碎，并重新进入生产循环过程中。
The leftover parts from the mold-the plastic that fills the channels that take the hot plastic into the piece negative-fall down the machine, gets ground up, and put back into the production cycle.
这个缺点不久被面包酵母抽提物克服了。面包酵母抽提物是用初生的酵母生产的，它比含酒花残余物的废啤酒酵母纯净得多。
This was soon overcome by the use of baker's yeast which is a primary grown yeast which is a much cleaner yeast than the brewers yeast that have the residual effect of hops.
生产的原料：木质生物质，油籽，禾草，谷类作物残余物。
Feedstock. Woody biomass, oil seed, grasses, cereal crop residue.
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