Group of customers in the industry's traditional customer groups. The proportion of sales to this customer group is huge, accounting for 70% to 85% of the revenue of the VMC. This is real customer groups have the ability to create pressure for business by asking about the progress, the quality of the product. This customer group is defined as clients actually have greater power to impact business and production of the VMC. It is also the customer groups in classification list of clients according to the 20/80 rule.
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