There are two production processes of flame - retardant fabric : a flame retardant is added to the yarn , and a flame retardant is added to the fabric treatment , and the effect is the same .

One-time flame-retardant and permanent flame-retardant, one-time flame-retardant is to add a little in the amount of flame retardant, processing technology is not much.Permanent flame retardant is to add more flame retardants, better quality flame retardants, and higher processing requirements.