Can you please look at the possibility of offering the NBR 301 with 25 micron on both sides as ell as 25 micron on one side and 5 micron on the other. This is for the Cylinder Head Gasket, hence total thickness must be 0,25mm. We will take about 4 to 5000 kgs of this. We also want in 0,50mm again with 25 micron coating on both sides. We would need about 1000 kgs of this. Please also offer us NBR Steel in thickness of 0,35mm. We again would need about 2.5 to 3000 kgs of this. Can you please offer the prices in Kgs as well as in Square Metres.