CN211471632U - 坩埚杆及直拉单晶炉 - Google Patents
坩埚杆及直拉单晶炉 Download PDFInfo
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Effective date of registration: 20220301 Address after: 065201 South Youyan Technology Group Co., Ltd. No.2, Xingdu village, Yanjiao, Sanhe City, Langfang City, Hebei Province Patentee after: GRINM GUOJING ADVANCED MATERIALS Co.,Ltd. Patentee after: Youyan New Material Co., Ltd Address before: 065001 No.4 Baihe Road, Langfang Development Zone, Langfang City, Hebei Province Patentee before: GRINM ELECTRO-OPTIC MATERIALS CO.,LTD. Patentee before: Youyan New Material Co., Ltd |
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