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没询盘，就努力发开发信吧~~~·1.http://www.amvac-chemical.com/ContactUs/tabid/60/Default.aspx2.http://www.ri-chem.com/ContactUs/3.http://www.charkit.com/contact.html4.http://www.novachem.com/contactus/index.cfm5.http://www.westlakechemical.com/fw/main/Contact-Us-7.html6.http://www.ocichemical.com/index.php/contact-us
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