离子源灯丝耐高温耐腐蚀钛酸镧（H4）现货直发美轩光电

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Nanjing mei light materials ltd

Address:Nanjing luang electric materials ltd., qin huai district, jiangsu province
Tel:13776483187

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13776483187

离子源灯丝 耐高温耐腐蚀 钛酸镧（H4） 现货直发 美轩光电