• pbt(polybutylene terephthalate)gx114(high-class) instrinsic viscosity(dl/g): 0.890±0.0152021-12-29
• pbt(polybutylene terephthalate)gx114(qualified) instrinsic viscosity(dl/g): 0.890±0202021-12-29
• pbt(polybutylene terephthalate)gx134(high-class) instrinsic viscosity(dl/g): 1.180±0.0302021-12-29
• pbt(polybutylene terephthalate)gx134(qualified) instrinsic viscosity(dl/g): 1.180±0.0402021-12-29