TIANJIN ZHIZHEN TECHONOLOGY Development Co.,Ltd, subsidiary of TIANJIN ZHIZHENHUIREN BIOTECHNOLOGY CO LTD is a private-owned company and our core TEAM has more than 15 years nonwovens production and process experiences. TIANJIN ZHIZHENHUIREN BIOTECHNOLOGY CO LTD was registered in Tianjin City on October 15, 2012 Our original industry is science and technology promotion and application service industry, and service fields are biotechnology and medical device research and development. From 2015, we are committed to manufacturing and trading PP melt blown media ,including in medical mask media e.g. EN14683 ,EN149 NIOSH N95 ,KF94 etc. industrial filtration media including HVAC filter material ,from G4-F9 ,pocket filter media ,thermal insulation material and related nonwoven business