Every cost was going bad in last one year.
Date 18/Dec/2019, exchange rate 7.00. copper 49086, zinc 17957, steel 3510. (¥/Ton)
Date 18/Dec/2020, exchange rate 6.52. copper 59318, zinc 21883, steel 4281. (¥/Ton)
labour cause approx cost +3% Please contact us for quote before placing order, thanks for your cooperation.