Genuine Amtech flux made in the USA by Inventec Performance Chemicals.
Expiration Date: 18 August, 2026
(or fresher)
LTronics is an authorized distributor, beware of counterfeits.
Official Distributors: https://www.inventecusa.com/reps---distributors.html
Safety Datasheet (SDS): https://www.inventecusa.com/assets/nc-559-v2.pdf