锥形阀塞经过精密研磨，采用硬化高合金材料或一种镀层不锈钢，确保紧密密封和操作容易。
The tapered plug is precision ground from hardened high alloy material or an overlaid stainless to assure a tight seal and easy operation.
大罩壳密封邮箱，整体操作平台，无渗漏，不沾油，更干净，纱框采用优质材料精工制造。
Large Shell sealed-mail, the overall operating platform, no leakage, non-stick oil, cleaner, yarn box Seiko manufactured using quality materials.
采用优质材料制造，三速开关，任意调节空气流量，操作灵活。
Using quality materials, three-speed switch, any adjustment of air flow, flexible operation.
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