This machine is a locked rock cotton sewing felt machine, specialized in wall insulation rock cotton board, rock cotton felt, glass wire cotton board and other insulation materials sewing links, can use cotton wire, fire-proof wire to iron wire net, fiber net sewing on rock cotton, so that the insulation material has a strong drag effect, working on the wall or insulation layer not cracking, thus solving the rock cotton products no drag can't be used to the wall insulation problem, this machine uses a dragon door type down needle method, one-time sewing multiple lines at the same time down needle, using advanced large shuttle hook wire, producing locked thread marks, cutting rock cotton after not opening the wire. Kɔnɔŋ ye kɔnɔŋ ye kɔnɔŋ ye kɔnɔŋ ye kɔnɔŋ ye kɔnɔŋ ye kɔnɔŋ ye kɔnɔŋ ye kɔnɔŋ ye kɔnɔŋ ye kɔnɔŋ ye kɔnɔŋ ye kɔnɔŋ Kä juëc ye kek looi, ka lëu bï ya looi në kë wïc kɔc ye kek looi, ka lëu bï ya looi në kë wïc kɔc ye kek looi, ka lëu bï ya looi në kë wïc kɔc ye kek looi, ka lëu bï ya looi në kë wïc kɔc ye kek looi, ka lëu bï ya looi në kë wïc kɔc ye kek looi. Në ye mɛn, akutnhïïm juëc ye kɔc cɔl thermal insulation materials groups tɔ̈u thïn në baai de baai de baai de baai de baai de baai de baai de baai de baai de baai de baai de baai de baai de baai de baai de baai de baai de baai de