huányǎngbǐngwán

== Mandarin == === Romanization === huányǎngbǐngwán (Zhuyin ㄏㄨㄢˊ ㄧㄤˇ ㄅㄧㄥˇ ㄨㄢˊ) Hanyu Pinyin reading of 環氧丙烷 / 环氧丙烷