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Ｆ Ｈ７ 是１２２７ 与另外两种主要组分的复配物水溶液，抗冻性能较好，但在冬季当气温过低时仍会结冰而不能正常使用。加入乙二醇、乙醇、无机盐等抗冻剂未能得到抗冻性能合乎要求的杀菌剂。加入少量的一种新的杀菌组分并调整原配方组分比例，得到了抗冻性能良好（ 在－ １５ ℃下放置７２ 小时以上不析出冰晶） 、杀菌性能优于原配方、生产成本较低或接近原配方的系列杀菌剂 Ｆ Ｈ７ Ａ— Ｈ Ｆ７ Ｅ。
F H 7 is 1227 and the other two main components of the aqueous solution complex, frost resistance is better, but in the winter when the temperature is too low, it will freeze and can not be used normally. Addition of ethylene glycol, ethanol, inorganic salts and other antifreeze failed to obtain antifreeze performance requirements of the bactericide. Adding a small amount of a new bactericidal component and adjusting the proportions of the original formulation components resulted in good frost resistance (no ice crystals were allowed to stand for more than 72 hours at -15 ° C), the bactericidal performance was better than that of the original formulation, and the production cost was lower Or close to the original series of fungicides F H 7 A H F 7 E.