It later forged alliances and partnerships with acma singapore and york international in the mid - 1970s and with mitsubishi electric co in the early 1980s to enter the air - conditioning market 较后在1970年代中期，该公司与新加坡的acma及york国际结合联盟，并在1980年代初期与三菱电器机构合作，进军冷气机市场。
