... in Germany for 8 years!This year, Powtran will take part in Hannover Messe in April.4th~8th ... under reservation this year! If you are interested, I will arrange assistants to show you around. (No photos!) ... to customers, if there is any problem, we will directly send control board or power board for ... share after sales service.Certificates:Powtran have been approved by CE,ISO9000/2000, TüV, ABS, and UL ...