通过有1.2万多用户的石材专业群发布即时信息，扩大石博会影响力。
There are more than 12,000 users from the professional stone group to release the instant message can expand the influence of stone Fair.
通过有1.2万多用户的石材专业群发布即时信息，扩大石博会影响力。
There are more than 12,000 users from the professional stone group to release the instant message can expand the influence of stone Fair.
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