Cho Ei Quailty Management

Quality assurance is one of the founding principles of Cho Ei. We have our quality assurance policies & objectives and the Quality Assurance System (QAS) is fully implemented into our production. We have a series quality improvement campaign, such as, Quality Control Circle (QCC), 5S, Pikapika, Teian system, Skill Map. It all helps us assuring our products with high quality and improving continuously our services.

Quality Management System Standard

  • ISO9001:2008 ------- Cert. No.: 7876-1999-AQ-RCG-RvA
  • ISO9001: 2008 ------- Cert. No.: 00108Q15541R0S/4400
  • ISO9001: 2008 ------- Cert. No.: 7820-1999-AQ-RGC-RvA / Rev. 1
Plastic World (PW)
Underwriters Laboratories(UL)

  • ------- Plastics - Component
  • ------- Flame-retardant and/or Color Concentrates - Component
Authorized Manufacturer

Styrolution, NSCC, ToyoStyrene, ShinEtsu Polymer