Product No.	Color	Solid content	proportion	Salt content	Remark
92FT	Slight yellowish	8%	0.81	0.07%	Low residue Wash-free
KP-15	Light yellowish	5%	0.8	0.06%	Wash-free
K-37	Light yellowish	65%	High viscosity	RMA0.2%	BGA Leaded
K-41	Light Yellowish	60%	Hi viscosity	RMA0.2%	BGA Leaded

Lead-free flux :

There is no lead-free flux without halogen. Under the requirement of lead-free, only bromate, bromide and organic acid as the structure of synthesis. The representing ones are 92FT KP-15

Paste Flux :

Basically paste flux is structured in Solder Paste Flux and is specially made for BGA applications. The lead containing paste flux is represented by K-37 and lead free is K-41