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Chinese customs officers in the coastal province of Shandong have intercepted 60,000 maps that "incorrectly labeled" the self-ruled island of Taiwan, which Beijing considers part of its sovereign land.

The maps, officials stated, also "left out important islands" in the disputed South China Sea waters, where Beijing's claims conflict with those of its neighbors, including the Philippine government and Vietnam.

The "non-compliant" maps, destined for overseas markets, cannot be sold because they "compromise national unity, sovereignty and territorial integrity" of China, customs representatives stated.

Cartographic materials are a sensitive topic for Chinese authorities and its rivals for coral formations, islands and outcrops in the disputed maritime region.

Specific Violations

China Customs stated that the maps also omitted the nine-dash line, which defines Beijing's claim over nearly the entire South China Sea.

The demarcation includes nine lines which extends hundreds of miles southeastward from its southern province of Hainan Island.

The seized maps also did not mark the maritime boundary between China and Japan, customs representatives stated.

Cross-Strait Status

Officials stated the maps improperly identified "Taiwan province", without detailing what exactly the mislabelling was.

China views self-ruled Taiwan as its sovereign land and has not ruled out the use of force to take the island. But Taiwanese authorities sees itself as separate from the Chinese mainland, with its own constitution and elected leadership.

Geopolitical Tensions

Conflicts in the South China Sea sometimes intensify - in recent days over the weekend, when maritime craft from China and the Philippines were involved in another confrontation.

Philippine authorities accused a Chinese ship of purposefully hitting and using water cannons at a government-owned Philippine craft.

But Beijing stated the incident happened after the Philippine vessel disregarded multiple alerts and "came too close to" the Chinese ship.

Previous Precedents

The Philippine government and Vietnamese authorities are also especially concerned to representations of the disputed maritime region in maps.

The Barbie movie from 2023 was prohibited in the Vietnamese market and modified in the Philippines for displaying a South China Sea map with the nine-segment boundary.

The announcement from China Customs did not indicate where the intercepted items were destined for sale. China provides much of the global merchandise, from Christmas lights to office supplies.

The seizure of "non-compliant cartographic materials" by customs officials is frequently occurring - though the number of the maps intercepted in Shandong significantly exceeds past seizures. Products that fail inspection at the border control are destroyed.

In spring, customs officers at an airport in Qingdao confiscated a shipment of one hundred forty-three marine maps that included "clear mistakes" in the territorial boundaries.

In late summer, customs officers in Hebei province confiscated two "problematic maps" that, in addition to other issues, featured a "improper representation" of the Tibetan border.