求翻译：协助采购经理进行前期开发供应商信息收集汇总（包括税务三证、CE、ISO、UL等相应认证信息），与供应商进行有关品质、价格、税率、交货期、帐期、售后服务等一系列有效的沟通协调，做好询价、比价、议价等相关工作是什么意思？

Procurement managers to help pre-development suppliers to collect summary information (including tax three certificates, CE, ISO, UL certification and other relevant information), and suppliers on quality, price, tax, delivery, payment, service, and a series of effective communication and coordinati

The help bought the manager to carry on to before expect to develop the supplier information collections to gather, having something to do with supplier carry on quality,price,tax rate,deliver goods the valid communication coordination of a series, such as period,debt period and after-sales service.

Assists to purchase manager to carry on the earlier period to develop the supplier collection of information to compile (including tax affairs three cards, CE, ISO, UL and so on corresponding authentication information), carries on the related quality, the price, the tax rate, the date of delivery,

To assist the purchasing manager for the prophase exploitation of supplier information collection summary (including tax three certificates, CE, ISO, UL, and so the corresponding certification information), with suppliers on quality, pricing, taxes, delivery, after-sales service, account period, a s

To assist the purchasing manager for the prophase exploitation of supplier information collection summary (including tax three certificates, CE, ISO, UL, and so the corresponding certification information), with suppliers on quality, pricing, taxes, delivery, after-sales service, account period, a s