No Clean Flux Core Solder provides excellent solderablity and high reliability. The flux residue requires no cleaning due to physico-chemical characteristics of the core Flux. Exhibits the absolute minimum of clear residue after soldering, with no offensive odours generated during use. it is a halide/ chloride free and one of the best spreading factor and less fumes while soldering and reduced sputtering also. It is more suitable for people using No-clean liquid flux It is suitable for full assembly work, re-work and post cleaning assembly.