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Customs authorities in China in the coastal province of Shandong have seized sixty thousand maps that "mislabelled" the self-ruled island of Taiwan, which Chinese authorities considers part of its territory.

The maps, officials stated, also "omitted important islands" in the disputed South China Sea waters, where China's territorial assertions clash with those of its regional neighbors, including the Philippines and Vietnam.

The "violating" 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 regional competitors for coral formations, islands and outcrops in the South China Sea.

Specific Compliance Issues

China Customs stated that the maps also omitted the nine-dash boundary, which demarcates Beijing's claim over almost the whole South China Sea.

The line comprises nine segments which stretches numerous nautical miles south and east from its southernmost province of Hainan Island.

The seized maps also did not mark the sea border between China and the Japanese archipelago, authorities said.

Taiwan Situation

Authorities said the maps incorrectly labeled "the Taiwan region", without detailing what exactly the mislabelling was.

China sees self-ruled Taiwan as its territory and has maintained the option of the use of force to take the island. But Taiwanese authorities sees itself as distinct from the mainland China, with its own constitution and popularly chosen officials.

Regional Tensions

Disputes in the disputed maritime region sometimes intensify - just recently over the weekend, when vessels from China and the Philippine government figured in another encounter.

Manila alleged a Chinese ship of purposefully hitting and using water cannons at a official Philippine ship.

But Chinese officials said the encounter happened after the vessel from the Philippines disregarded multiple alerts and "moved perilously near" the Chinese ship.

Previous Precedents

The Philippines and Vietnam are also particularly sensitive to depictions of the disputed maritime region in cartographic materials.

The 2023 Barbie film from 2023 was banned in Vietnam and censored in the Philippines for displaying a South China Sea map with the nine dash line.

The announcement from China Customs did not indicate where the intercepted items were intended to be sold. China supplies much of the global merchandise, from Christmas lights to stationery.

The confiscation of "non-compliant cartographic materials" by China's border authorities is frequently occurring - though the quantity of the maps intercepted in Shandong substantially surpasses previous confiscations. Merchandise that fail inspection at the customs are eliminated.

In spring, customs officers at an airport in Qingdao confiscated a shipment of one hundred forty-three marine maps that contained "apparent inaccuracies" in the sovereign limits.

In August, border authorities in the northern province intercepted a pair of "violating cartographic materials" that, in addition to other issues, included a "incorrect depiction" of the Tibet's boundaries.