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fire cotton socks seven days stink prevention hosiery running rivers and lakes stall exhibition hot selling 10 yuan 4 dual-mode socks. 
 boutique fire cotton socks tube socks: 500 pairs for men, 500 pairs for women, 500 pairs for women, boys and girls socks pairs (children's socks are 3 to 12 years old). 
 [fire cotton middle tube socks] 
 get advertising cloth and recording advertising cloth together with the goods for free, and send the mailbox. This product is 90 percent of cotton socks, which can be used for fire experiment, and a small amount of polyester and acrylic fibers can be mixed for fire experiment. When using solid color, the burning effect will be better. There are also cotton socks with flowers, but the style with flowers with silver silk edge or other fibers will affect the effect, so using solid color for burning is better and when burning the paper card starts to burn these are all skills how to distinguish cotton socks when they are burnt out. If they are glue-like, like burning candles, they drop on the ground, then they are not cotton socks. If they are burnt out, they are gray. Pinch them and they are powder-like cotton socks. It is worth noting that some friends think that burning black smoke is not cotton socks. Here, we need to correct that there is black smoke because some cotton socks with flowers contain other impurities and the cotton content is between 40% and 50%. Generally, when the cotton content is 80% or 90%, white smoke is burnt out.