[计] quality assurance data system

zhì liàng bǎo zhèng shù jù xì tǒng ㄓˋ ㄌㄧㄤˋ ㄅㄠˇ ㄓㄥˋ ㄕㄨˋ ㄐㄩˋ ㄒㄧˋ ㄊㄨㄥˇ