Our teachers are very kind and friendly. At school we learn many subjects such as Chinese, math, English, music, P. E. and so on. They are very interesting.
我们的老师很和蔼、很友好。在学校我们要学很多科目,如:语文、数学、英语、音乐、体育等等,它们都非常有意思。
We would like to pay sincere friends Quartet P Plus friendly, County jointly develop the rich treasure of the earth.
我们愿诚交四方宾朋、八方友好,共同开发文县大地的丰富宝藏。
BL-environmental friendly flame retardant belongs to N-P flame retardant series, and its main raw materials are phosphoric acid and urea the same as ammonium polyphosphate (APP).
BL -环保阻燃剂属于N - P系阻燃剂,其主要原料与聚磷酸铵一样是磷酸与尿素,但因为其特殊的合成工艺使它不同于普通的聚磷酸铵。
BL-environmental friendly flame retardant belongs to N-P flame retardant series, and its main raw materials are phosphoric acid and urea the same as ammonium polyphosphate (APP).
BL -环保阻燃剂属于N - P系阻燃剂,其主要原料与聚磷酸铵一样是磷酸与尿素,但因为其特殊的合成工艺使它不同于普通的聚磷酸铵。
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