The company mentioned thathosts in China used a separate cleaning program to prevent covid transmissionthan the uniform five|step cleaning process it implemented in the rest of theworld.
请问老师，最后一句的it是什么使用方法呢？我感觉好奇怪为何不直接用implemented表被动，就不需要it了哇
it implemented in the rest of the world是定语从句，it 指 The company。
