quotation and sourcing(报价与货源供应商的定位筛选) are standard practices in world trade. Sourcing here can be understood as identifying qualified suppliers across regions by means of advanced screening and positioning mechanism to minimize cost and maximize economic effect. Here are more examples of the use of "sourcing":
e.g. 1: Once the process was introduced as the method for sourcing and quotations, it rapidly became the norm for conducting business.

e.g. 2: The RFQ process is resource intensive. It involves obtaining the initial requirements from the customer, sourcing the parts from PPGI’s suppliers (which involves the identification of qualified vendors and the management PPGI’s own RFQ process), and collecting all the information into a final bid package.

e.g.3: Global sourcing is a procurement strategy aimed at exploiting global efficiencies in production. While a global sourcing process is usually initiated as a mechanism of exploiting cross-geographic arbitrages (simply put, identifying cheaper global sources), it is now a standard step in the global expansion of firms. Global sourcing advantages extend to identifying alternate supplier sources, utilizing buffer capacities and taking advantage of specific geographical talent pools.