DYR-3（R439A）
Shandong Dongyue Refrigerants Co. , Ltd
Domestic Sales Office：0533-8520226/ 8518777
E-mail：hgxiaoshoubu@xiyanm.com
Foreign Sales Office：0533-8510071
E-mail：esales@xiyanm.com
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Domestic Sales Office：0533-8520226/ 8518777
E-mail：hgxiaoshoubu@xiyanm.com
Foreign Sales Office：0533-8510071
E-mail：esales@xiyanm.com
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Shandong Dongyue Future Hydrogen Material Co. LTD