20 degree 40S/1 pva yarn
20 degree 50S/1 pva yarn
20 degree 60S/1 pva yarn
20 degree 80S/1 pva yarn
30 degree 20S/1 pva yarn
40 degree 20S/1 pva yarn
40 degree 60S/1 pva yarn
40 degree 80S/1 pva yarn
60 degree 40S/1 pva yarn
60 degree 60S/1 pva yarn