a) internal estimate of the contract/order according to the "regulation on the manner to provide services outside of VIETSOVPETRO" approved by the GENERAL DIRECTOR on December 14, 2010 the Director of XNXLKS & SC approval.b) planning to buy goods/services for individual works, service work, to control the process to not exceed limits the cost of this plan.c) tracking and settlement procedures with clients; notice of settlement amount accounting contract value to customer request invoice payment
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