会算经济账推销先算经济账。开鞋厂的朋友都抱怨：木垫板太脆,切割机冲不了几次就裂了,每年多花了好多冤枉钱。黄礼丕(pī)眼前一亮：要是改用化工原料,抗冲击、柔韧性好,准行。他跑遍了大连的图书馆,买回了相关书籍,终于发现,聚乙烯是好材料!一问价,他傻了——1吨1．1万。咬咬牙,他还是买了半吨。实验开始了。由于掌握不好原料、温度、压力,做出来的垫板不 Economic accounts will be the first to count economic accounts. Friends of a shoe factory complain: wooden pad is too crisp, cutting machine can not be washed several times on the split, spent a lot of money wasted every year. Huang Li Pi (pī) shines: If the switch to chemical raw materials, impact resistance, good flexibility, prospective. He traveled all over Dalian’s library, bought back books, and finally found that polyethylene is a good material! One asking price, he silly - 1 ton 11000. Bite his teeth, he still bought half a ton. The experiment started. Due to poor grasp of raw materials, temperature, pressure, do not make the pad