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CERTIFICATES

Membership Certificate

The Organization for the Safety of Abrasives (oSa®)

herewith grants to the company

EHWA DIAMOND IND. CO., LTD.

as of 1 July 2003

and to its affiliates

WEIHAI XIANGGUANG MECHANICAL IND. CO., LTD.
as of 23 July 2008

PT. EHWA INDONESIA
as of 03 May 2018

based on the Application Form, oSa®-Constitution and Conditions of Use for the oSa®
Trademark the right until withdrawn to use the oSa® mark in the described colours
for the abrasives notified.

This right applies to the designation of the registered tools as well as their
packaging or labelling.

Bonn, 15 May 2018 Executive Board

Organization for the Safety of Abrasives (oSa®) · Oxfordstraße 8 · D-53111 Bonn · Germany

PICTOGRAMS Circular saw
Wall chaser
Wall saw Core drill rig and motor
Floor saw Core drill hand-held
Wire saw (construction, stone) Drill
Wire saw (stone) Floor grinder
Table saw Block saw
Tile saw Polishing machine
Bridge saw CNC machine
Hand-held saw Edge polishing machine
Ring saw
Angle grinder Caution

Dry use Wet use Laser welded Most suitable
Good
APPLICATION CHART
Acceptable
Not recommended

4 INNOVATOR IN TECHNOLOGY