导语：In cross-border marketing, businesses often face the dilemma of "high investment, low return"—spending a large budget on WhatsApp push notifications, but due to a large number of invalid numbers mixed in with the customer list, the message reach rate is low, the conversion effect is poor, and the marketing resources are seriously wasted.
[Phone Model Query] Can you tell what phone the other person uses by phone number?原创文章，未经授权禁止转载。详情见转载须知。
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