70W outdoor high pressure sodium lamp electronic ballast, used for road lighting, tunnel lighting

70w electronic ballast,match with high pressure sodium lamp,applied for road lighting,tunnal lighting,public lighting and outdoor lighting.Q&AQ1: Are you factory?A1: Yes. Welcome to visit our company and factory. Q2: How many R&D staff?A2: 6 core R&D people with top university background. Q3:

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