求翻译：四． 甲方应积极采用营销手段，大力开展广告宣传工作，尽最大能力开拓中国市场，保证销售量逐年递增。是什么意思？

Four. Party should be actively marketing tools, and vigorously carry out the advertising work, to the maximum of the Chinese market, to ensure that the sales increase every year.

. * party 4 should be actively pursued, and the marketing tools necessary to vigorously carry out advertising campaigns work to the best of your ability, opening up the Chinese market, and ensure that sales increase every year.

Four. The party of the first part should use the marketing method positively, does the advertisements propaganda work vigorously, the completely ceiling capacity develops the Chinese market, guaranteed the sales volume increases progressively year by year.

IV. Party a should actively adopt marketing, advertising work vigorously, to the maximum of opening up the China market, guaranteed sales increased year by year.

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