Porcelain lamp holders, it is characterized by good insulation is the best insulation material in all material than the high temperature, bakelite, the degree of the temperature of the plastic should be much higher absolute retardant. Bakelite, plastic fire. Ceramic lamp holders Absolutely not. The drawback is relatively brittle, easily broken.
James supply the lamp holders, bulb holders, E27 lamp holder and GU10 lamp holder 30 years!
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