Home / Standards / GB 2423.21-91 GB 2423.21-91 Basic Environmental Testing Procedures for Electric and Electronic Products—Test M: Low Air Pressure Test Method 电工电子产品基本环境试验规程 试验M:低气压试验方法 Standard Type GB ICS N/A CCS N/A Status N/A Issue Date N/A Implementation N/A Responsible Dept N/A Drafting Unit N/A