adtech  新しい記事を作成しました
3 年

The method is simple to produce, but the quality of the produced refining flux is not high | #refining flux

The method is simple to produce, but the quality of the produced refining flux is not high

The method is simple to produce, but the quality of the produced refining flux is not high

The method is simple to produce, but the quality of the produced refining flux is not high