Ningbo Boyue Electronics Co., Ltd. was established in October 2008, specializing in the manufacture of Ht relays. Most of the company's products have passed domestic and foreign safety certifications such as UL in the United States, TUV in Germany, and CQC in China. The products are widely used in industrial automation control, Communication equipment, household appliances, smart home, instrumentation, security and automobiles and other fields. The company is composed of a diversified group joint-stock company, specializing in R&D, design, production and sales of small electromagnetic relays to create a brand. The varieties are: (Communication) HT23F, HT4100F, HT4100F-Y(4101), HTD2(4078) (General, Power) HT3F(T73), HT21F(22F), HT32F, HT32F-T, HT14F, HT14FD, HT14FH series, HT90, HT90W(T91), HT90K(T93), HT90R, HT90L series (Automotive) HTV1, HTV6 (T78), HTV3 (European regulations, American regulations), HTV4, HTV5, HTV8, HTV8-T 3 categories, 23 varieties, 528 specifications, with an annual production capacity of 43 million pieces.