All frequency converter manufacturers boast that their products cost - effective, the common reason, the old woman said the old woman is right. However, xiao an suggested that the type selection of inverter can be domestic to change the need not imported, can be used general need not special, can use small power need not large power, simple is to save money. For example, ambition xin AMB100 series universal frequency converter, with stable functions and high cost performance, can meet the needs of various working conditions.