Raw material definition, including raw material type, proportion, resource and if possess long-term cooperative contract with raw material suppliers.

定义原材料，包括原材料种类，比例，来源以及是否拥有原材料提供商长期合作协议。

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Raw material definition, including raw material type, proportion, resource and if possess long-term cooperative contract with raw material suppliers.

定义原材料，包括原材料种类，比例，来源以及是否拥有原材料提供商长期合作协议。

youdao