A.合肥錦繡經(jīng)濟(jì)開發(fā)區(qū) B.杭州錢江經(jīng)濟(jì)開發(fā)區(qū) C.天津大港經(jīng)濟(jì)開發(fā)
A.綠色生物可降解 B.高壓聚乙烯 C.聚丙烯
A.30%~40% B.50%~60% C.70%~80%