Product Name （Process flow）	treatment condition			check system
	T	time	working concentration
degreasant spent meal	room temperature-60℃	5-8 min	Alkalinity:15-25 dot	Titration test
wash	room temperature	30-60 second	PH<9	PH  test paper
wash	room temperature	30-60 second	PH<8	PH  test paper
surface conditioning	room temperature	20-40 second	PH>8	PH  test paper
phosphatizing	room temperature	8-12 min	total acid： 12-18dot	Titration test
wash	room temperature	4-6 min	PH>6	PH   test paper
wash	room temperature	30-60 second	PH>4	PH   test paper