Sino can offer you perfect plastic bottle handle mould, with short cycle time and long mould life. 
mould steel: use S136 with hardness 48-52HRC for core and cavity, mould base: P20 steel
mould cavities number: 12, 16, 24, 32, 48...
mould life: 1M to 5M
injection cycle time: 15-18s
mould delivery time: 60 days.