3ml 10ml グラデーショングリーンガラスエッセンシャルオイルドロッパーボトル

Though the manufacturing of glass itself is highly automated, critical functions such as quality control need large teams of skilled professionals. Not surprisingly, the total cost of production in China, where manpower is among the cheapest in the world, is less than half of that in France and almost half of that in the US. With manufacturing facilities in North China, DEMEI Win-Pack is able to produce glass at significantly lower costs than its competitors in other parts of the world and deliver a sustainable cost advantage to customers