... , brass, copper with nickle plated 3. usage: connect wire terminal blocks, electrical ceramic terminal block1. ceramic body, metal fittings, brass, copper with ... to the customers' requirement.Good quality and factory direct priceDelivery time: 20 days after comfirming the orderspayment:30%T/T,balance ... /L or 100% irrevocable L/C at sight SY5038 porcelain terminal blocks