Filterworkshop - Latest News 2026-07-22T20:06:12+00:00 urn:uuid:50eaf1ab-f97d-30b3-217d-833c2ad40086 PTFE high strength sewing thread specially for high temperature filter bag sewing urn:uuid:4c05a17c-b793-156e-ff99-e54edcb7b6f0 2016-07-21T06:04:33+00:00