国产午夜福利视频在线网址,歐美牲交a歐美牲交aⅴ免費下載,不卡无在线一区二区三区观,国产无吗视频一区二区三区

Detail

4,4'-DichIorodiphenyl sulfone

CAS NO. 80-07-9 EC 201-247-9 UN IMDG
4,4'-DichIorodiphenyl sulfone
Formula:  C12H8Cl2O2S
Assay:  99.5%min
M.P:  146-151℃
Packing:  25kg bag,1FCL=16MT
Capacity:  2000MT/Y
Raw material for engineering plastics poly sulfones, also used for medicine additives.