真空管

Quest in the 3. 超低压时代(ULV) chapter.

Tasks (1)

Vacuum Tube×4Items

Rewards by difficulty

Easy: Vacuum Tube×32
Normal: Vacuum Tube×4
Expert: Vacuum Tube

Prerequisites

巨型青铜管道3. 超低压时代(ULV)

Unlocks

ULV 热力发电机3. 超低压时代(ULV)