Henan Hexin Hengda Industrial Co. LTD is a famous professional manufacturer of various self-heating warmer patches for more than 20 years, we can provide OEMODM and we are the Group company with four factories& so our product lines also have cooling gel patches mosquito repellent products, as well as other disinfection and cleaning care products etc, we are the research producing, sale incorporated company we have totally-enclosed GMP workshops and advanced production equipment, and we have CE and ISO13485 from TUV ISO9001, MSDS SGS, etc.