Usb Mobile Charging Socket Type A & Type C (With Dual Port Operation) As Suitable For Reading Light Fitting Of Lhb Type Coaches Confirming To E Dts-411, Corr. 1&2. Note :- (1) Rcf/Rdso Approval Letter To Be Submitted Along With Offer. (2) Test Certificate Of Material To Be Submitted Along With Bill Doc Ument For Acceptance Of Material Supplied. (3) Sample Approval Before Bulh Supply [ Warranty Period: 30 Months After The Date Of Delivery ] ]