... -MT05. MT01 is the bottom grade, and MT05 is the top grade.The higher grade one is better than the lower ... is more green in color than the lower grade one. e.g. MT05 is more green than MT04, MT ... hold more healthy-concerned compound in qty than the lowder grade ones, such as amino acids, vitamin etc.1, ... years, in unopened package if stored under proper conditions. High grade Matcha with nori seaweed