Wax-soosaarka poliurethane ee caalamiga ah: Falanqaynta qoto dheer ee soo saarista Polyurethane Polyurethane waa polymer la wada isticmaali karo oo ka soo jeeda falcelinta kiimikaad ee u dhexeeya diisocyanates iyo polyols. Sifooyinkeeda gaarka ah, sida flexibili
Waxaan ku faraxsanahay inaan u dabaaldegno gaarsiinta guusha leh ee 500-aad ee alaabta koollada ah ee Hangzhou Meetlin Group ee shirkadda Ruushka. Sannadkii 2002, shirkadda Ruushku waxay dooratay Meetlin alaab-qeybiyeyaal badan, taasoo calaamad u ah bilawga safar 23 -