we are the factory making linear actuator and lifting column and control box with wirless remote control since 2011, we can make the product according to your needs. Our factory have 2000 square meters. We can provide 30,000 set per month.We are the golden supplier in Alibaba for six years.We took a largest order of 50,000 set. welcome to ask for more information. E-mail : zbb@gemingag.com wechat:13957778774 what's app: 13957778774 web: www.wzgm168.com