关于关于 ET，，PT 等缩写的解说等缩写的解说1)S-lotS-lot is “Development trial“.开发试制Mainly,we will confirm the specification performance. And we will check the quality of the part,too. 2)ET-lotET-lot is “Engineering trial“.工厂试制Mainly,we will confirm the assembling performance.And we will check the quality of the part,too.3)PT1PT1 is “production trial 1“.量产准备 1We will confirm all things for production.For exsample)Quolity,Assembling performance,and so on. 4)PT2PT2 is “production trial 2“.量产准备 2This is the final trial stage.If some parts are bad in PT1,we check them in this stage. This is the last confirmation stage before SOP.5)SOPSOP is “Start Of Production“量产开始SOP means “manufacture start“.6）SOSSOS is “Start of Sale“销售上市。