Contact Hart Biotech for inquiries about red light therapy devices, distributor partnerships, OEM projects, and professional biophotonic recovery solutions. WhatsApp: 008613543268662 Email: [email protected] Add.: 5F, Building 12, Jiazitang 1st Industrial Zone, Guangming District, Shenzhen City, Guangdong Province, P.R. China. Fill out the form below and we will respond ASAP. Your Name Your Email Message Get a response in 1 working day Find our location on Google maps. There is just 28kms from Shenzhen International Airport, cost about 34 mins.