优点:耐热耐寒防腐防酸碱化学稳定减磨耐磨无毒害机械性好低摩擦系数绝缘性自润滑性耐折性耐开裂性压缩强度好         我司供应以下产品：   PFA AC-5820 大金美国 用途： 其它 特性备注：低粘度、高 ESCR（抗应力裂纹）、抗燃、良好的电气性能、良好的流动性、耐化学性良好、耐气候影响性能良好 重要参数： 熔体流动速率:5 g/10min 密度:2.12 g/cm3 拉伸强度:19.6 MPa 断裂伸长率:250 % 硬度:60 生产厂商：大金美国公司    PFA ACX-31 大金美国 用途： 其它 特性备注：低粘度、高 ESCR（抗应力裂纹）、抗燃、良好的电气性能、良好的流动性、耐化学性良好、耐气候影响性能良好 重要参数： 熔体流动速率:1 g/10min 密度:2.12 g/cm3 拉伸强度:19.6 MPa 断裂伸长率:250 % 硬度:60 生产厂商：大金美国公司       介绍:   PFA是半透明粒料，注塑、挤出成型。成型温度度，475度以上容易引起变色或发生气泡。并注意脱模会较困难。   PFA因熔融的材料对金属有腐蚀作用，长期生产，模具需要电镀铬处理。     详解:    from M. Beauchamp's, I found madame in tears: she had sent for me to know when you would return. I told her my orders from M. Beauchamp; she first extended her arms to prevent me, but after a moment's reflection, `Yes, go, Florentin,' said she, `and may he come quickly.'"  "Yes, my mother," said Albert, "I will return, and woe to the infamous wretch! But first of all I must get there."  He went back to the room where he had left Monte Cristo. Five minutes had sufficed to make a complete transformation in his appearance. His voice had become rough and hoarse; his face was furrowed with wrinkles; his eyes burned under the blue-veined lids, and he tottered like a drunken man. "Count," said he, "I thank you for your hospitality, which I wo