Yiwu Shengwei preferred procurement elastic webbing companies, cheap, specializing in the production elastic belt bra elastic supply, knitting with other products. Combustion: the use of fire to ignite, observe the state of flame, smell it emitted after combustion, post-combustion residue see, 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 with price elastic bra 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, cotton has little powder ashes, was black or gray, hemp is to produce a small amount of white powder ashes. Yiwu Shengwei preferred procurement elastic webbing companies, cheap, specializing in the production elastic belt, knitted belt, and other products. Elastic band: 1) Common elastic band is a strong elastic band, can be used for Pen / edging and other, fold cord for edging more beautiful, mainly Japanese customers used more 2) elastic bands also medical elastic / knitted elastic belt line categories: classification) line, the line is generally divided 0 # / 10 # / 30 # / 40 # bra elastic band, a wide range of wholesale elastic bra, nylon thread / polyester thread / Bundy line / cotton thread / mark line / transparent fishing line, etc. 2 ) special cable had waxed thread / water lines, while the nylon line in general are the oil in the car sometimes fabric (cloth plus EMB) of the need to use oil, but the line in order to avoid oil leakage, resulting fabric dirty; car with a thin cloth 402 # line, not easy to wrinkle.