Specifications Type: Oven Parts Place of Origin: Guangdong, China (Mainland) Brand Name:orsam ... is alternative with frostedbulbshell. To guarantee bulbs can pass Whirlpool Thermal circle test in 300°C high temperature circumstance, ... employees. It mainly manufactures and sells common incandescent bulbs, oven bulbs, electric appliance lamps, colored bulbs, energy saving lamps ...