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High Grade Industrial graphite crucible with collar for jewelry making gold silver brass precious metal melting cast High Grade Industrial graphite crucible with collar for jewelry making gold silver brass precious metal melting cast

Beijing Guang Xin Guo Neng Technology Co., Ltd

Tel: +86 010 848 508 99

Mob: +86 186 1135 0918

Skype: +186 1135 0918

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