Grain refiner is crucial to preventing cracks and defects in aluminium alloys and we are proudly the leader in the development, manufacture and application process of high efficiency grain refiners on the world stage.Our award-winning Optifine product range, developed after 20 years of research to improve operations in the casthouse, caters for clients right across the sectors. Whether you are producing chassis for aluminium electric vehicles (EV), window frames, food cans, foil or anything else, we have a product to suit you. Testament to its success, Optifine is now used by 42 major casthouses worldwide in the production of over three million tonnes of alloys a year.Our product range now includes premium Optifine 5:1 125, offering an unprecedented 125% relative efficiency.MQP is part of the STNM group, a leading manufacturer of grain refiners, master alloys and aluminium alloy wheels and a Shanghai stock exchange listed company with an annual turnover of more than $1bn. In cooperation and in partnership with STNM, Optifine grain refiner offers: *An efficient low-cost manufacturing base *Mainland Europe and USA warehouse stock *European Quality Control by MQP Opticast