" SCL is a sole company in Vietnam which produces fly ash from coal slag of thermoelectric plant owing to its advantaged location and unique production technology. The dried fly ash, used as an additive for roll-compacted concrete works, brings the company an impressive gross profit margin of 55-57%; The dried fly ash of SCL affirmed its preeminence in quality and price in comparison with imported product. The product is being used for huge hydropower projects such as Son La and Lai Chau ......