"K standard" is the abbreviation of K standard, and it is the highest manufacturing standard of household/commercial central air conditioning proposed by Mitsubishi Heavy Industries for the first time in the field of central air conditioning. "K" stands for king, carat and keep. The "K" standard air conditioner host is manufactured by the original factory in Japan. Whether it is energy-saving standard, environmental protection standard, humanized standard or comfort standard, "K" standard air conditioner has reached a new height, providing users with more comfortable product experience and humanized purchase experience.