1. Professional factory 2. High quality raw material 3. Standard: GB/T13663-2000 4.Certification: ISO9001,ISO140 About us Suzhou Aichi Pipe professional production of PE solid wall, drainage pipes, fittings, gas pipe, the specification dn20-630, the annual output of nearly 10,000 tons, quality assurance, price concessions, welcomed the new and old customers to contact to discuss cooperation! ...