Hi, "In this project, investigations carried out with ZnAl15 materials for joining zinc coated steel sheets of TI094 WWP+E1(thickness 1,1 mm). Before investigations were performed by resistance spot soldering and show that using low temperature melting materials leads to a lower damaging of the zinc coating." This passage is from a research report. Second sentence doesn't seem make sense as it begins with "Before". I need your opinions.