Shenzhen Sisida Technology Co., Ltd. is a manufacturer with over ten years of independent research and production. The company has a mature research team and multiple large workshops with over 200 employees. We support OEM, customization, and mold making for our clients. The team leaders have many years of research experience. Our products are popular in over 200 countries worldwide, and our manuals and color boxes are in neutral English. If you need other languages, you can privately message customer service for customization