肯定(ding)都(dou)知道主要(yao)(yao)是(shi)由(you)橡(xiang)膠(jiao)(jiao)和(he)帆布(bu)來組成的(de)(de)橡(xiang)膠(jiao)(jiao)要(yao)(yao)占據(ju)輸(shu)(shu)送(song)(song)(song)帶(dai)(dai)的(de)(de)主要(yao)(yao)局部，第(di)(di)一(yi)點(dian)：最根本的(de)(de)原因(yin)就是(shi)輸(shu)(shu)送(song)(song)(song)帶(dai)(dai)的(de)(de)原材料。由(you)于近兩(liang)年(nian)來橡(xiang)膠(jiao)(jiao)的(de)(de)價格(ge)起伏不定(ding)，有(you)時候高的(de)(de)離(li)譜，造成輸(shu)(shu)送(song)(song)(song)帶(dai)(dai)的(de)(de)價格(ge)浮動(dong)比較大。第(di)(di)二點(dian)：工人工資和(he)管理費(fei)用。因(yin)為生產需要(yao)(yao)給工人發工資，還(huan)得管理輸(shu)(shu)送(song)(song)(song)帶(dai)(dai)等等，這個方(fang)面的(de)(de)需求也(ye)(ye)會(hui)存(cun)在費(fei)用的(de)(de)存(cun)在第(di)(di)三點(dian)：從輸(shu)(shu)送(song)(song)(song)帶(dai)(dai)本本身來看，輸(shu)(shu)送(song)(song)(song)帶(dai)(dai)覆蓋膠(jiao)(jiao)的(de)(de)厚度和(he)布(bu)層的(de)(de)多少也(ye)(ye)決定(ding)輸(shu)(shu)送(song)(song)(song)帶(dai)(dai)的(de)(de)價格(ge)。其實，感覺(jue)這個也(ye)(ye)是(shi)最重要(yao)(yao)的(de)(de)一(yi)點(dian)因(yin)素了