现在的压力主要是来自购买者方面，材料供应商方面压力较大，而替代品、潜在竞争者压力相对较低。
The pressure comes mainly from purchaser and raw material provider, the pressure come from substitutes and potential competitors are relatively less.
现在的压力主要是来自购买者方面，材料供应商方面压力较大，而替代品、潜在竞争者压力相对较低。
The pressure comes mainly from purchaser and raw material provider, the pressure come from substitutes and potential competitors are relatively less.
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