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Service time:
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Tel: +86 2266331999 Ext.265

 Fax: +86 2266331998

Direct Line : +86 15222 410519

Email: info@otaiwaterproof.net 


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Otai is a professional polymer waterproof system supplier. With the concept of innovative development, we have obtained a number of honors and certificates in the field of waterproofing, and constantly strive to become the waterproofing industry leader.

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Building Waterproof Industry Standardization Laboratory Certificate




Certificate of Vice President of Single Roof Technology Branch




China Building Waterproof Association AAA Grade Enterprise



FM Certficate for TPO membrane









Member of China Building Waterproof Association



National High-Tech Enterprise Certificate






Science and Technology Enterprise Certificate



Tianjin Famous Brand Product Certificate



Tianjin Key New Product Certificate



Business License



CE certificate for PVC membrane



Safety Production Standardization Enterprise