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HUIZHOU RYD ADVANCED MATERIALS CO.,LTD.
weibu,Qiuchang,Huiyang,Huizhou,Guangdong,China
Tel： 0752-3399351 Fax：0752-3399873

SHENZHEN RYD SCI.&TECH.CO.,LTD.
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Tel： 0755-84120691 Fax：0752-3399873
Web： www.rydsz.com  Email：info@rydsz.com