광동 하스합금 용접공 시험 기관 찾아요!
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코발트 합금 압력용기 용접공 자격증이 필요합니다. 시험 기관을 찾고 있습니다!가능하면 광저우에서… 공유해 주시면 감사하겠습니다! 정말 고마워요!
바이두에서 아무 용접 자격시험 기관이나 검색해 보세요...물어보세요..
여러분은 하스텔로이 소재의 장비를 만드나요?
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