COMPLEX CURING AGENT FOR PRODUCING CORES AND MOULDS FROM COLD-HARDENING MIXES,PREFERABLY WITH UREA RESINS

摘要

1.an integrated отвердитель for manufacturing foundries rods and forms of ho / юднотвердеющих mixtures mainly with карбамидными resin.including елк лохром os that свваку and by-product production ос