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PostPosted: 09 Jul 2024, 16:07 
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729 Battle Taichi is a false legitimacy.

China 729 manufacturer does claim the innovative sponge sheet to be a monolayer structure in compliance with the ITTF technical standards.
It is not the case. Upon our own investigation over the China Patent Database we found out a real manufacturing process they employed to produce a complex sponge material.

Two layers of raw rubber material C and D are merged together without any visible seam. Nevertheless, it still represent a TWO LAYER structure of one same composition. -- that is explicitly prohibited by ITTF technical regulations M4.
We strongly expect ITTF to issue an official public announcement regarding the illegal product in next month or two.

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PostPosted: 09 Jul 2024, 21:54 
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Blade: DHS Long 2
FH: Dianchi D
BH: Yinhe Pluto
Ta-da! :D

p.s. the white stuff under the sponge is just another piece of hard paper to hold the sponge straight when taking photo. Incidentally the paper has blue surface on that side touching the sponge so it can be seen another layer of blue, it's not part of the sponge. The sponge only has two layers of blue.


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PostPosted: 11 Jul 2024, 13:32 
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. HISTORICAL RETROSPECTION OF THE COMPLEX SPONGE MATERIALS.

https://www.tabletennisdaily.com/forum/ ... ost-467362

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