通常1-5営業日で発送：説明
人体に無害で、手に汚れがつきません。 最高級の炭酸カルシウム原料を使用しKC(韓国自律確認)品質認証を獲得しました。 最高級炭酸カルシウムを原料とし、軽いタッチでなめらかな書き味です。 鮮やかな色で可視性に優れ、講義を受ける学生達の集中度が高まります。 粉の飛散が少なく、よく消えます。 細いチョークは折れやすいため、捨てられる部分が多くなります。 しかし弊社の製品は太く、ロングサイズなので、長期的に見ると他社の製品より経済的です。 持ちやすくコーティング加工がしてあるため手を汚しません。 圧縮成型と特殊な高温熱処理を施したため、密度が高く書き減りが少なく、丈夫で折れにくいため経済的です。 スチロールの中仕切りに1本ずつ入っているため、破損が少ないです。 日本ではすでに JIS(Japanese Industrial Standards 日本工業規格)の認証を受けて製作されましたが、韓国内では韓国環境試験研究院から、人体に無害であるというKC(自律安全確認)品質認証を受けました。品質においてはもちろん一番であり安全です。
| Product # | B01MZ1BHFE |
|---|---|
| Weight | 110 g |
| Product package size | 13 x 9 x 3 cm |
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