Shenzhen BLUESKY Technology Co., Ltd. and Guangzhou warmtone Hardware Electric Appliance Factory [ was named before YINSHENG] joint design, development, production Aquarium Pet class such as crossover creative products. "Warmtone, YINGSHENG" created in 1988, for the well-known international brands. The Company main products is heaters, Auto feeder, Thermometer, Hydrometer and Magnetic brush, and so on. In addition, a plenty of Patent and Certification are can supply. Such as , CE, ROHS, TUV, SAA, UL, and so on.