Urea formaldehyde shrinks beforehand fluid (UFC) is to producing formaldehyde while, undertake absorption to formaldehyde gas with water of urea of 35 % pH indicator and make.

• 尿素甲醛预缩液(UFC)是在生产甲醛的同时,用35%25浓度的尿素水对甲醛气体进行吸收而制得。