Dear customer, I am in charge of this series of products and I serve as the company manager. You can contact me to obtain more discounts and other new product information. I can arrange training and use of the products for you to ensure that you can use them quickly and efficiently. This is my contact information. Please contact me before placing an order to obtain the correct price, which includes details of transportation and shipping costs. This is my business card information: Manager: Violet Ms WhatsApp:+86 19898819420 Email:qianruihly@gmail.com Due to webpage restrictions, we cannot store too many videos. If you are interested in our product, you can contact me for more detailed product videos and factory production videos. WhatsApp:+86 19898819420 Email: qianruihly@gmail.com