Usually the density of ceramic fiber module expression is KG/M3, with a range of 190-220 KG/M3.But sometimes customers express in PCF (pounds per cubic foot). This requires us to understand conversion of cubic feet and cubic meter. 1 cubic foot = 0.0283 cubic meters, 1 pound = 0.453 kg. When we communicate with the customer,we must identify the working temperature of ceramic fiber module, size and density. Generally speaking, such as temperature, with degrees in China, some foreign customers like to use Fahrenheit. Fahrenheit and Celsius temperature conversion formula is ℃ = ( F- 32)/ 1.8. For size, Chinese prefer to express the size of the ceramic fiber module in mm, and some foreign customers like to use inches, the unit must be confirmed. To avoid error, above specification must be written in the quotations. In addition, we must confirm the material of anchoring with customers, SS304 standard for 1260 type product, SS310 for(1450type containing zirconium). Customer should provide the drawings of anchoring parts.