Utility model patent
Activated carbon filtration device
A hydrogenated triphenylbenzene production device using thermal circulation
A device for extracting biphenylether by heating and negative pressure distillation using a heat carrier
A high-pressure separator using a hydrogenation device of triphenylbenzene
A device for continuous distillation and purification of biphenyls
A heat transfer device for the production of biphenyls
A device to improve the hydrogen utilization rate of a hydrogenation device
Trihydroxylaminomethane crystallization drying device
Sulfur trioxide gas distribution and stirring device
A double-layer biphenylated hot box
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