精品少妇无码一区二区三批,中文字幕人妻系列人妻有码,欧美午夜精品福利在线观看,中文字幕精品一区二区三区在线

Flame retardant -- durable flame retardant finishing of fabrics

Environment friendly flame retardant, used in flame retardant finishing of cotton or polyester fabrics, gives excellent flame retardant effect to the fabric. After treatment, the fabric has no continu...