So, Naman, the point is that here we always have hedging mechanism back-to-back work. And in the copper, there has not been a long-term contract. It's always contracts are like 30 to 60 days delivery. So, when we don't have long-term contracts, the formula in the previous years is generally varied from 0.25% to 0.5%. Maximum then on a three-months average, it is varied only by 0.25%. Formula don't move up and move down in the previous year, but this year copper was extraordinary rallied and the bullish trend in copper and the price went up to skyrocket from US $10,000 to $14,000. And because of that, a 40% increase in copper, the formula has impacted very big way. So in the quarter three, we had tailwind where we have got benefited from the elevated buying and driven by exceptional demand from China. This resulted in formula-led margin compressions. – But in the quarter four, there was a structural mismatch because whatever the sales formulas gone up in quarter three is gone down little bit and because of that there was a declining in the margin. So if you average both the quarters, it is getting normal. But because of the quarter three and quarter four there is a difference in formula pricing, and this is because of tailwind in quarter three, the quarter four margin was under the problem. There was also impact of geopolitical situation, which elevated the cost of oil, gas and chemical price compounded by war risk charges by shipping line. And Iran conflict has laid further fuel to the cost pressure, which was not budgeted, but it has passed on in the next quarter. So there was a sudden shock from the geopolitical situation. And there is also a -- sometimes there was a -- generally the -- when the LME goes up, the sale formula drop and that was -- and then we don't hedge the formula because of the like lead we have one year or six month long-term contract. The copper contract started, but we have changed the system now and we explained to our buyers. So in the future we will be working on a long-term hedging formula mechanism where the price of the formula which varies up and down won't affect our sale price. This is the correction we have done for the future. And we are sure that this volatility in the market when the copper like in every four-five years' time. One time the copper cycle boom. And because of that boom cycle the price go skyrocketing and it will impact the sale formula. So after the correction, the formula get dropped also. But in the forward guidance, I'm sure that this can be maintained and with constant and steady margin from the quarter, next years. This has been one-time impact and I'm sure it will not get repeated because of the tailwind goes up or down. Next question please.
Yes, it is because of the geopolitical war. There is a supply of the raw material has been constrained and a lot of containers got stuck in Dubai port. So we have a lot of material stuck in UAE port and we are not able to receive the material and that is why there was a problem in the raw material side so the volume has been little dropped. Which we have diverted now from the other ports, but the old material lying still stuck in the Middle East port and once the Hormuz Strait will open, then only those material come, but the future materials are getting diverted from other ports.