This cap is a common oil bottle cap on the market. It is made of polypropylene by injection molding. It can be made into different colors. It can be used on the oil bottle with inner plug, which can match various specifications of essential oil bottle.The daily output is about 50000. Generally, cartons are used for packaging and pallet transportation to reduce the collision during transportation. This cover can be opened for adults and children alike.All in all, this cover is very versatile.Looking forward to cooperating with you.