Performance Review Institute (PRI) | 161 Thorn Hill Road | Warrendale, PA 15086-7527

Joseph G. Pinto Vice President and Chief Operating Officer

This certificate is granted and awarded by the authority of the Transportation and Power GenerationAccreditation Program to:

Impro Industries(Yixing) Co., Ltd

No.6, Xuneng Road, Environment Protection Science & Tech Industrial Park Yixing, JIANGSU 214205

China

This certificate demonstrates conformance and recognition of accreditation for specific services, aslisted in www.eAuditNet.com on the Qualified Manufacturers List (QML), to the revision in effect at the

time of the audit for:

Heat Treating

Certificate Number: 116481005087Expiration Date: 31 July 2019

May 21, 2018

Ms. Rozzy Chen engineer Impro Industries(Yixing) Co., Ltd No.6, Xuneng Road, Environment Protection Science & Tech Industrial Park Yixing, JIANGSU 214205 China

Dear Rozzy Chen,

The report of the TPG audit of your facility on March 12 - March 15, 2018 has been approved for TPGaccreditation. TPG accreditation entitles your organization to appear on the Qualified Manufacturers List(QML). Accordingly, we have enclosed your certificate of accreditation and scope of accreditation.Customers may be directed to the Online QML at www.eAuditNet.com for relevant accreditation datesand information.

**Note that if any changes occur within your company (i.e., ownership, company name, address,change in QMS status, etc.) that may affect your capability or scope of accredited activities, youare required to notify PRI Staff immediately.

We would like to congratulate you on your achievement in meeting the stringent requirements of TPGaccreditation. If you have any questions concerning the TPG process, please contact PRI Headquartersat +1 (724) 772-1616.

Sincerely,

Karen Martin Coordinator - Industry Managed Programs TPG Business Unit

/KM

Enclosures: Certificate Scope of Accrediation

Karen Martin

SCOPE OF ACCREDITATION

Heat Treating

Impro Industries(Yixing) Co., Ltd No.6, Xuneng Road, Environment Protection Science & Tech Industrial Park

Yixing, JIANGSU 214205 China

This certificate expiration is updated based on periodic audits. The current expiration date and scopeof accreditation are listed at: www.eAuditNet.com - Online QML (Qualified Manufacturer Listing).

In recognition of the successful completion of the PRI evaluation process, accreditation is granted to

this facility to perform the following: TPG AC7102 Rev C - Audit Criteria for Heat Treating (to be used on audits on/after 5Novemberi 2017) Cast Irons – Customer Specs TPG AC7102/8 Rev A - Audit Criteria for Heat Treating Pyrometry (to be used on audits on/after10 April 2016) Heat Treating Pyrometry – Industry Specs AMS 2750 TPG-AC7102/5 - Audit Criteria for Hardness Testing for Heat Treating Hardness – Brinell Hardness – Portable