The price of caprolactam ammonium sulfate is slightly lower, at US$155-158/ton, because producers have cut their quotations when demand is limited. The producer said that buyers are no longer interested in the FOB price of US$160 per ton. According to reports, Tianchen has sold a cargo to Southeast

In the end of October ,the largest factory which produce Sodium Nitrite and Sodium Nitrate in China was close.It would cut about 20% output of China every year.Meanwhile ,it is a peak period in winter in North of China because it used in the achitective .So the price incresed from 2750 Yuan to 3800