*LINE Official Accounts can use team chat only when they happen to be invited to the group by LINE people. It's also possible to give absent Discount codes to your friends as being a gesture of gratitude for their cooperation, which might also increase their participation level. 圍繞興趣開展，由用戶發起、用戶參與，較適合討論、招募與口碑擴散，缺點是官方不可控 หรือ มอบรางวัลให้กับลูกค้า... https://history-of-aikido71473.blogadvize.com/43778996/a-review-of-line-business-id