Use sand cloth or steel wire brush to clean both tube and cup to a bright metal. Steel wool is not recommended.
采用砂布或钢丝刷清除管道和端口，使其显露出光洁的金属色。不建议采用钢丝棉。
The qualified steel wire for steel wool have been made a batch trial process, their material object quality can come up to Ameri…
批量试制了合格的钢棉用钢丝，其实物质量达到美国钢丝水平。
The qualified steel wire for steel wool have been made a batch trial process, their material object quality can come up to Ameri…
批量试制了合格的钢棉用钢丝，其实物质量达到美国钢丝水平。
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