绿动环保你们的产品和营销模式很好，但我还是没有太大的把握，是否可以购买部分产品试销？
The products and the marketing model of Green Force Environmental Protection are very good, but I am not sure if I can purchase some products for trail sale.
这种新产品将在本市先行试销。
The new products will first be put on trial sale in this city.
新产品进入市场和市场营销计划的试金石是市场试销。
Trial sale is the touchstone of new product entry of market and marketing plan.
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