not for sale，for test only

中文意思是，仅供测试，非卖品。仅用于测试，不用于销售

例句

No commercial value，sample only for test， not for sale ( Sample evaluation purpose)没有市场价值，仅样品测试的，不销售的(样品评估目的)

These items are just for show—they're not for sale.

So， these are gifts for customers， not for sale.