2. Huang, Yu Daquan, Wang Lai, Sn-Zn-based lead-free solder alloy containing rare earth elements, China invention patent authorization number ZL02 109623.6, authorization announcement date1KLOC-0/7,2004.
3. A SnZn series lead-free solder flux and its preparation method. The invention patent number of China is ZL2007 100114.4, and the date of authorization announcement is 065438+200910.