42 Scientific and technological services, namely, scientific research, analysis, testing in the field of fume extraction in an industrial environment, air quality field in an educational and commercial environment; industrial analysis and research services, namely, analysis of industrial fluids; technological services, namely, industrial analysis in the field of environmental compatibility and impact on environmental health of welding, soldering, brazing and cutting tools; analysis and testing of tools for use in welding, soldering, brazing or cutting; technological, measuring and analysis services, namely, testing and analyzing of industrial machines; calibration of welding, soldering, brazing or cutting machines, tools and their parts; chemical analysis; engineering design services; chemical engineering; certification services, namely, analysis and evaluation of the goods of welding, soldering, brazing and cutting tools of others to determine conformity with certification standards; computer aided industrial testing of welding, soldering, brazing and cutting tools; consultancy relating to testing industrial implements, namely, welding, soldering, brazing and cutting tools and testing the environmental compatibility of the tools; scientific and scientific research services concerning environmental compatibility and impact on environmental health of welding, soldering, brazing and cutting tools; industrial design services; design of welding, soldering, brazing and cutting machines and tools, and parts of those goods; technological and industrial measuring services, namely, measurement evaluations in the field of air quality assurance; technological, analysis and research services relating to industrial implements, namely, welding, soldering, brazing and cutting tools; industrial design in the field of welding, soldering, cutting and brazing machines and tools; design and development of computer hardware and software; design and development of welding, brazing, soldering and cutting machines and apparatus and their parts; design and development of welding, brazing, soldering and cutting devices and equipment