【伦敦交通】How it's made - 不为人知的制作工艺

Parts

1. P1 · How it's made - Producing a bus blind（巴士水牌）
2. P2 · How it's made - Producing a London transport moquette（车厢内的地毯）
3. P3 · How it's made - Underground roundel sign（地铁的圆形标志）