The seam polishing technology has been developed for Zwiesel Kristallglas AG (Schott Zwiesel). Based on this technology, we have also developed a stem pulling machine which can produce up to 60 glasses with a drawn handle per minute. The first seam polishing machine has been in use in prototype design for more than 20 years. With over 25 years of experience in the construction of burners for fusion we have the necessary know-how. Our qualified production staff carry out the commissioning on site.