危険物乙1・乙2・乙3・乙5 ・乙6トレ速

YUMELABO, K.K.

This is a test preparation app for Hazardous Materials Handler Examination Class B Class 1, Class 2, Class 3, Class 5, and Class 6 (for those exempted from subjects)! Make use of your free time and aim to pass the exam efficiently!