70 years ago, fire hose tube with a flat knitting loom woven elastic supply, tube diameter size deformation, low yields. The second half of 1974, industry organizations tube weaving trial group, according to the principle of knitted, woven using latitude and longitude, relying knitting yarn knitting process, using a loop of yarn cylinder and sinker loop will not interwoven warp and weft Quick as a whole, and to become lining weft insertion warp knitting tubular knitted elastic band, plastic products production technology level of the outlet pipe and high-pressure fire hose of highest in the nation elastic band manufacturers. Sourcing elastic webbing preferred Yiwu Shengwei company, cheap, specializing in the production of elastic, with knitting, and other products. Combustion: the use of fire to ignite, observe the state of flame, smell it burning issue after Yiwu knit elastic band, see residue after burning, in order to determine the elastic band material. A cotton fiber and hemp fiber cotton fiber and hemp fiber are just near the flame that is burning, burning quickly, the flame was yellow, take the blue smoke. Both burning odor and burning ashes after difference is that the issue of paper burning smell of cotton, hemp ash smell burning issue; combustion knitted elastic band wholesale, cotton has very little powder ashes, was black or gray, hemp is to produce a small amount of white powder ashes.