**1) Why Day 7 “requested callback” is high value** - A callback request is an explicit buying signal: it moves from passive content consumption to human contact, which usually correlates with higher SQL rates. - 中文：主动预约回电是明确的购买信号，说明从“看内容”进入“要对接”，通常有更高转成商机/合格线索的概率。 **2) Why AI keeps this lead in C Pool** - Score only rises to 14 vs. C→B threshold 60; one strong signal isn’t enough to justify a pool upgrade. - 中文：分数仅升到14，远低于60的升级线；单个强信号不足以升级，系统会继续观察是否持续互动。 **3) Nurturing actions to trigger now** - Create a sales follow-up task within 24h; route to the right success/sales owner with context. - Send a lightweight, relevant asset pre-call: use-case brief + pricing/volume options (not full proposal yet). - 中文：24小时内生成销售跟进任务并分派；会前发送轻量资料（场景案例+批量价格选项），暂不直接上完整方案。 **4) How this supports a 100-unit distribution inquiry** - The callback lets sales qualify volume, timeline, and distribution intent early; if fit is confirmed, trigger a formal B2B proposal for 100 units. - 中文：回电可用于早期确认采购量、时间表和分销意图；确认匹配后，再触发100套的正式B2B方案，提升大单转化效率。