My carts guy in China is having packages held up at customs

You might meet the issues that Customs seized the vape carts due to its suspected infringing.

It is reported that the types of intellectual property rights involved in the goods detained by the customs include trademark exclusive rights, patent rights, copyrights, and copyright-related rights. Among them, goods involving infringement of trademark exclusive rights accounted for 98.48% of the total suspected infringement, involving patent protection. The case value of goods showed a continuous growth trend, with a year-on-year increase of 41.2%.

Here is Buddy’s Locking Patent on Cannabis Oil Vape Cartridges.

Buddy’s Locking Patent on Cannabis Oil Vape Cartridges