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"Sunfeel Solder-Free Gold" Receives Certification from National Authoritative Institutions
Sunfeel—the pioneer of the "Solder-Free Gold" category—created the innovative "Solder-Free Welding Technology," making gold purer and more valuable. This achievement has been granted national invention patents and honored with the "China Gold Association Science and Technology First Prize," demonstrating full recognition from national authoritative institutions and establishing Sunfeel Solder-Free Gold's leadership in the industry.
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National Gold and Diamond Products Quality Supervision and Inspection Center
赛菲尔无焊料黄金 更纯更有价值
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