First, I will start with a disclaimer.  I do not advocate violence in any manner.  The reasons for the calling forth of military force, in a proportional response or otherwise, are valid in few instances as the framers of our Republic understood.  Those values hold true even in today's complicated and technologically advanced societies, and we would do well in practicing our religious objections to such things, and also as atheists (as the case may be) in adhering to the principals put forth in the adoption of our nation sans any religious parts objected to (some will argue they cannot be separated, but we had better find some common ground somewhere to help save our Republic).

In analyzing this event from the recently available news stories compared to my experiences, it seems premature (and likely very incorrect) to suspect the pager manufacturer as being involved in any way with the planting of explosive devices within their manufactured units.  In assembly, it seems there would be inherent dangers beyond the expertise of the workers.  Additionally, I cannot imagine a neutral manufacturer being in any way complicit with a state sanctioned manufacture of weapons of war, especially without lawful conformance to being a weapons manufacturer in the nation of assembly.  I can see how they could have been commissioned by contract and payment to cause a pager to be manufactured with a little extra room for post-manufacture modifications without knowing the true source or reason for the change.  If the contract/request had been lucrative enough, they would make the change.  Who would notice a little wider pager which is delivered in its own carrying case designed to be worn on a belt?

The explosive modifications likely were made in a re-routed shipping scheme.  Some of you reading this have probably purchased electronics on-line and have watched your shipping progress via tracking numbers.  This author has seen several of his electronic purchases suddenly rerouted even from being in one of the last steps to normal delivery in my home town to hundreds of miles away.  These could easily have received a shipping 'inspection' that was actually a center designed to add a little something to a device to aid in non-4th Amendment approved monitoring.  Of course, one would have to be involved in something that was contrary to what might be termed government approved actions, or active in the kinds of things that might lower our social scores in the eyes of the powers-that-be.