Pioneer Purification Technology Co., Ltd is a company with more than 10 years of experience in the profession and industry with production base in CHINA. We supply new air filters for all needs. We have among other things, offshore companies as customers. Something that requires the utmost of quality within the air filters. We setting certified, which means that we are qualified to control and improve the quality of all air filter products which includes panel filters, pocket filters, bag filters, separator heap filters, minipleat heap filters, HEPA filters, ULPA filters for the preferred fonts available. We hope you find our website informative and interesting. If you may be interested, please simply send an email airfilterzn (at) gmail com and we will send you more information to start with. Thank you for your valuable time and we look forward to your news. Sincerely, Irene.Zhu Pioneer Purification Technology Co., Ltd