PU injection manufactured by LOMY includes PU/PU dual density injection, PU/rubber injection, PU/TPU injection, PU/SPU injection. The progress for these combination is same, requires bonding a midsole to an outsole, the difference is outsole material. The progress is to make outsole polyurethane foam poured into the mold cavity, and a dummy last is used to close the mold. At the end of outsole cure cycle, the midsole foam is poured on the backside of the outsole. A lid is used to secure the mold and a second cure cycle is completed. After the soles attaches to the upper, the release agent to be applied to the dummy las to separate it from the outsole.