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紅寶石線嘴：此產品由不銹鋼金屬本體和寶石精密加工、組合而成，紅寶石硬度僅次于金剛石，達莫氏9級以上，它是單晶體，可以制得極高的光潔度。能有效的保護漆膜及長時間連續(xù)工作，即能保證線圈的高絕緣性不受絲毫影響。

ruby nozzle:the product is made of stainless steel and ruby by precise processing and combination. the rigidity of ruby is above than the level 9 and is just less than that of diamond. it is a single crystal and can be made with high brightness and cleanness. it can effectively protect paint film and long-term continual work to ensure the high insulation of wire coil suffers no hurt.