...d） 缺乏弹性（Inelastic demand） 供求关系密切（Close buyer-seller relationships） 专业化购买 （ Professional purchasing ） 波动性需求（Fluctuating demand） 产业用户购买过程的参与者： 发起者(Initiators)：指提出和要求购买的人。
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Certified Professional Purchasing Manager 注册职业采购经理
Becoming a Professional Purchasing Manager 成为职业采购经理人
Certified Purchasing Professional 注册职业采购专员 ; 认证采购管理师
Professional purchasing bearing help you save time, save trouble, money!
专业代购轴承帮您省时、省事、省钱！
Professional purchasing each miniature bearing, thin wall bearing, stainless steel bearings, non-standard bearings and refractory type bearings.
专业代购各种微型轴承、薄壁轴承、不锈钢轴承、非标轴承、疑难型号轴承。
ABSTRACT: as a lover of wine, have you ever thought of learning professional wine knowledge? So you will be more confident while you purchasing or storing wine in the future?
摘要：作为一名葡萄酒爱好者，是否有想过学习专业化的葡萄酒知识，让自己在选酒和藏酒时更加从容自信呢？
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