The HW21S 183°C Medium-Temperature Solder Paste is engineered for high-precision electronics repair, SMT applications, BGA reballing, LED soldering, and temperature-sensitive component work. With a balanced formula containing lead and silver, it delivers superior conductivity, mechanical strength, and stable soldering results — even in demanding environments.

Designed with a syringe-style tube for accurate application, smooth solder flow, and long working time, the HW21S ensures consistent quality in mobile repair labs, SMT production lines, and micro-soldering workshops.