The invention improves the conductivity, thermal stability, tensile strength and heat conductivity of the inner lead, has high producing efficiency and reduces the cost.
本发明提高了半导体器件内引线的导电性能、热稳定性、抗拉强度和导热性能，生产效率高，降低了成本。
The invention integrates ground heating, air-conditioning and producing hot water with high energy utilization rate and improves heat changing efficiency.
本发明集地暖、空调、制取热水于一体，能源利用率高，提高换热效率。
The invention integrates ground heating, air-conditioning and producing hot water with high energy utilization rate and improves heat changing efficiency.
本发明集地暖、空调、制取热水于一体，能源利用率高，提高换热效率。
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