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AAA Battery (Hande) — Sea Transport Certificate
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2021307398913 – Design patent certificate (stamped) (3)
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Wenzhou Zhengyuan Electronics – 2023228104788 clip-type induction color test pen – Niu Chunjiu – 20240618 – utility model patent certificate (1)
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A multi-purpose electrician repair tool_EW911 utility model patent certificate
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Wenzhou Zhengyuan Electronics – 2023306744585 clip-type induction color test pen – Niu Chunjiu – 20240507 – design patent certificate (1)
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A multifunctional test pen repair tool certificate (301 utility model patent)
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Wenzhou Zhengyuan Electronics – 2024305767743 mosquito-repellent wristband (illuminated anti-mosquito aromatherapy ESD) – design patent certificate
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BJXS232766I Henan Biaoniu 400001 – invention patent certificate (1)
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301 utility model patent
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Wenzhou Zhengyuan Electronics – 2024305504729 test pen (2) – design patent certificate
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Wenzhou Zhengyuan Electronics – 2024305504714 test pen (1) – design patent certificate (1)
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Wenzhou Zhengyuan Electronics – 2024305606065 test pen (3) – design patent certificate
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