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咨询: CB/Z 181-1998 921A球扁钢中频弯曲和热处理技术条件 Specification for bending and heat.treatment of 921A bulb flats by means of MF induction 电话:010-88099016 ; E-mail:zxd711020@hotmail.com gbstandard@hotmail.com chinastandard@hotmail.com ; QQ: |
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咨询: CB/Z 181-1998 921A球扁钢中频弯曲和热处理技术条件 Specification for bending and heat.treatment of 921A bulb flats by means of MF induction 电话:010-88099016 ; E-mail:zxd711020@hotmail.com gbstandard@hotmail.com chinastandard@hotmail.com ; QQ: |
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