Main application : it is the basic raw material for chemical industry 產品主要用途:基本化工原料。
Formaldehyde is used as one of basic raw materials in syntheses of synthetic tannins 摘要甲醛通常是用于合成鞣劑制備的一種基本原材料。
Sand , as a basic raw material in dry mortar products , is strictly required to its moisture content 砂石,作為干粉砂漿基本原材料之一,其濕度含量要嚴格地與要求一致。
Application : mainly used for petroleum industry . it ' s the basic raw material of w - base catalyzer used in oil refinery 用途:多用于石油工業生產上,是煉油廠用鎢基催化劑的主要原料。
Lime and dolomite are basic raw materials that have made an essential contribution to many of the achievements of our modern world 石灰和白云石是對我們現代社會的很多成就做出重要貢獻的基本原料。它們是鋼鐵