Is it safe to use non-Apple adapter to charge Apple devices?
Is it safe to use non-Apple adapter to charge Apple devices?


Possibly.  

There's an old consumer's adage... You get what you pay for and it's especially true when dealing with (expensive) Apple gear.  

You've listed a number of "specs" but specs mean nothing in terms of quality.  The question is, do you want to plug your $3,000 USD MacBook Pro, $800-$1000 USD iPhone and $500-$800 USD iPad into a discount 3rd party charger?  

Cheap chargers can wreak havoc on your expensive gear - if you can't get a genuine Apple product, get an adapter that's MiFi certified - at least you know that they have gone through the effort and cost to become certified by Apple that their products are compatible.