Home / Standards / GB 4909.12-85 GB 4909.12-85 Test methods for bare wires—Solderability test of coating—Solder globule method 裸电线试验方法 镀层可焊性试验 焊球法 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