拖拉机和卡车数量有限，故障频发，经常导致农产品在运输过程中腐烂。
Tractors and trucks are limited and routinely break down, often causing the produce to spoil en route.
采购产品闪烁的球，频闪灯，徽章，时装棒，闪光笔，肩章和标志。
Blinking Ball, Strobe, Badges, Fashion Wand, Flashing Pen Badges and Emblems.
主要产品有：DSP智能数字移频系列、广播音箱系列、界面麦克风系列、会议系列、无线麦克风系列。
The main products has: DSP series intelligent digital frequency shift, radio speaker series, the interface microphone series, meeting series, wireless microphone series.
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