Baoji Towin Rare Metals Co.,Ltd

Quality Control

Strictly Compliance With ASTM Manufacturing Standard

Standard Specification for Niobium and Niobium Alloy Strip, Sheet, and Plate ASTM B393

Standard Specification for Niobium and Niobium Alloy Bar, Rod, and Wire ASTM B392

Standard Specification for Niobium and Niobium Alloy Ingot ASTM B391

Standard Specification for Tantalum and Tantalum Alloy Plate, Sheet, and Strip ASTM B708

Standard Specification for Tantalum and Tantalum Alloy Rod and Wire ASTM B365

Standard Specification for Tantalum and Tantalum Alloy Ingot ASTM B364

Standard Specification for Tantalum and Tantalum Alloy Seamless and Welded Tubes ASTM B521

The Authentication Certificate of Quality Management System ISO9001（2015）

We have long term cooperation with

Northwest Institute for Non-ferrous Metal Research

for Chemical Analysis

(the analysis equipment of NIN as below)

Certifications

Standard: ISO9001

Number: 05317Q30681R0M

Issue Date: 2017-05-03

Expiry Date: 2020-05-02

Scope/Range:

Issued By: