Batch 0049-010: Ink-Dip Synchronization in Japanese Calligraphy Supply Chains

批次0049-010：日本书法用品供应链墨汁浸蘸同步机制

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Kyoto inkstick makers require overseas buyers to dip their signing pen simultaneously into fresh sumi ink during virtual contract ratification.
The ink must be ground onsite from a specific pine-soot block—no pre-mixed liquid allowed—for authenticity.

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