但是在连续退火时，铜线发热使线材变软，线本身就有一定的延伸。
But in the continuous annealing, copper wire heating make wire become soft, line itself has certain extension.
本公司拥有专业的线材处理技术，如包层、拉制、退火、电镀、扁平线绕圈和热浸焊等，能够满足多种工业领域的特殊要求。
We meet the needs of many diverse industries through our specialized methods of processing wire including: Cladding, Drawing, Annealing, Electroplating, Flat Wire Rolling and Hot Solder Dipping.
最大退火电流高达2500A，保证了线材经退火后的 延伸 率高达30%。
The max. annealing current is up to 2500A, which ensures that the elongation of annealed wire can reach 30%.
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