We are based in Hunan, China, start from 2020,sell to South Asia(20.00%),Africa(20.00%),Eastern Asia(20.00%),Southern Europe(10.00%),South America(10.00%),Mid East(10.00%),North America(10.00%). There are total about 5-10 people in our office. 2. how can we guarantee quality? Always a pre-production sample before mass production; Always final Inspection before shipment; 3.what can you buy from us? PLC,Frequency converter,HMI,Numerical control system,Low-voltage circuit breaker 4. why should you buy from us not from other suppliers? One-stop industrial product supplier