Intercepting the shipment, lining the interior of with some explosive (some putty that could hug all open space, or swapping out the batteries with custom ones that are half filled, etc), then wiring up a microchip that triggers when a specific code of 1’s & 0’s is received, or perhaps audio signal.
We’re talking about a state secret police here. There is no law or order. There is no “democracy”. They have billions of dollars in funding, and a mandate to do whatever they want with essentially zero consequences.
Don’t forget the hundreds of billions that global capitalism funneled into China by “outsourcing” absolutely everything they possibly could over the last 30-40 years — devaluing developed world labour markets and environmental regulations, and winding back the clock to an unregulated slave labour market is what made it so attractive.