求助两个ISO标准,希望大家帮帮忙,多谢! ISO 3262-19:2000 Extenders for paints -- Specifications and methods of test -- Part 19: Precipitated silica | |||
ISO 3262-20:2000 Extenders for paints -- Specifications and methods of test -- Part 20: Fumed silica | |||
|
youjian000 2010/03/24
请看附件。