ringf amp; all; rmiger schalld amp; auml; mpfer to use r amp; t.; hrungsstangen of gie and white; forms

摘要

aringf & all; rmigerschalld & auml; mpferthe use of r & hrungsstangen makes;of gie and white; formsconsisting of a ringk & all; bodyof synthetic resin and an embedded metal ring, thethe same ow & w; endurchmesser.