At least those parts are tested for strength...Tractor Supply I doubt they care.... Most of the plane parts my son sells to the crop dusting industry doesn't come from China. Mostly European countries. Spain, Poland, Germany, etc... His company home office is in Spain and most of the planes come from Poland...can't say about airliners...but the crop dusters don't want Chinese parts... bottom line, if you are going to depend on it in a triple figure curve, I would want to know it's strength...