In recent years, Adidas, Dr. frog and other famous brands Knitted underwear Frequent formaldehyde exceeds standard and pH value exceeds standard. In May 20th, at the seminar on knitted underwear held in Wuhan, Hubei, Wang Zhi, director of the expert technical committee of the China knitted Industrial Association, revealed that the main reasons for the failure of knitted underwear were Jerry building and insufficient washing times.

"Formaldehyde, pH value and color fastness are all old problems of underwear quality." Wang Zhi told the author, "before, we did not pay much attention to these problems. With the improvement of living standards, consumers are paying more and more attention to the safety of underwear. In fact, the problem of formaldehyde exceeding the standard can be solved as long as the washing times are enough. The current safety flaw is that the production enterprises have not gone completely according to the technological procedures.

Data show that in 2011, the output value of knitting enterprises above Designated Size reached 576 billion 500 million yuan, up 21% over the same period last year. But knitted apparel exports 20 billion 750 million pieces year-on-year, down 0.4% from the same period last year. This is the first time since 2000, the export decline has also meant that the market competition of knitted underwear is becoming more and more intense.

At present, many knitted underwear are playing "safety cards". Wang Zhi introduced: "the state also attaches great importance to the specification of functional underwear. At present, the more reliable underwear functions include warmth retention, dehumidification, antibacterial and magnetic properties, all of which have corresponding national standards, such as keeping the warmth rate above 30%.