The company then allegedly refined the waste oil before mixing it with processed lard and selling the tainted product to its distributors .
Chang Guann purchased up to 243 tonnes of recycled waste oil disguised as lard from the Pingtung factory , starting in February 2014 .
The company then allegedly refined the waste oil before mixing waste oil with processed lard and selling the tainted product to waste oil 's distributors .
Chang Guann purchased up to 243 tonnes of recycled waste oil disguised as lard from the Pingtung factory , starting in February 2014 .