ASTM was founded in Dongguan, China in 2012 by a team of experienced technicians. The team has experience in overcurrent protection products from material selection, R&D, testing, manufacturing, and marketing. ASTM's innovative design incorporates electronic fuse technology into power fuses. ASTM spends more than 15% of its annual revenue on research and development, testing and approval. It is our goal to provide over-current equipment with high safety standards-fuses.