To meet the growing demand of domestic automotive industry, Wanhua Company in Yantai has developed a novel product—— methylenediphenyl diisocyanate (MDI).
By means of molecular scale management, the technology of separating normal paraffins from naphtha through adsorption using 5A molecular sieves was studied with
The Dagang district of Tianjin city posses proven oil reserves amounting to 878 million tons, proven gas reserves totaling 36.05 billion m^3, and geothermal res
<正> The Dahua Chemical Company in Cangzhou,Hebei provincehas decided to import the 50 kt/a TDI package unit licensedby the International Chemical Company of Sw