It's secure to download the app. GKL B2B has been originally developed by NoktaBarkod and it belongs to the Business category. The developer rolled out a new version of this application on Nov 28, 2015 and over 100 users downloaded and installed the tool.
Take the opportunity to get the installation package of GKL B2B 2.0 free of charge and have a look at users' reviews on Droid Informer. The app is created for Android 4.0 and higher.