China-China-Otis-Elevator-Parts-Otis-Elevator-PCB-Board-Manufacturer
1. Otis elevator parts pcb board in the picture description is as follows: Layer: 4 layer Material: Fr4 Board Thickness: 1.6mm Surface Treatment: Lead free HASL Solder Mask: Green Copper Thickness:...
China-China-Otis-Elevator-Parts-Otis-Elevator-PCB-Board-Manufacturer
1. Otis elevator parts pcb board in the picture description is as follows: Layer: 4 layer Material: Fr4 Board Thickness: 1.6mm Surface Treatment: Lead free HASL Solder Mask: Green Copper Thickness:...