Specifications And complete technical support of offering.Sumlink products are widely used in xsDSL,cable modems, NIC,HUB,Switch and Routers,AT MAIN PRODUCTS: 10BASE-T FILTER , 10/100BASE-TX TRANSFORMERS, 100/1000BASE-TX RANSFORMERS 10BASE-T FILTER , 10/100BASE-TX TRANSFORMERS, 100/1000BASE-TX RANSFORMERS T1/E1/CEPT/ISDN-PRI TRANSFORMERS T3/DS3/E3/STS-1TRANSFORMERS, SONET/SDH(E4/STM-1) TRANSFORMERS ISDN U-INTERFACE TRANSFORMERS, ISDN S-INTERFACE TRANSFORMERS AUDIO TRANSFORMERS ADSL TRANSFORMERS, ADSL FREQUENCY FILTER INDUCTORS HDSL,HDSL2/G.SHDSL TRANSFORMERS VDSL TRANSFORMERS FIBER CHANNEL PRODUCTS WIDEBAND RF TRANSFORMERS Power products Our mission has always been to thoroughly satisfy the needs of our customers with highest quality design, production and service. our customers are our top priority.Sumlink's zero-defect philosophy translates into defect free products for our customers.Each sumlink products undergoes a 100% test of electrical parameters.