Customer requirements may be based on price,  quality, delivery and so forth and (they)are called order qualifiers.

客户的要求可能基于价格、质量、交货等等，这些要求被称为订单资格因素。

网友以上句子可以改为以下3种句子结构

【1】Customer requirements may be based on price, quality, delivery, and so forth; they are called order qualifiers.

【2】Customer requirements, which may be based on price, quality, delivery, and so forth, are called order qualifiers.

【3】Customer requirements such as price, quality, and delivery are termed order qualifiers.