Haiyan Terminal Block Co., LTDZ3.H36China·Haiyan Terminal Blocks Co., Ltd. is a factory-direct manufacturer with 25+ years’ experience supplying terminal blocks, distribution blocks, junction boxes, and wire connectors. We help energy, industrial, and construction projects run safely and efficiently. With more than 130 product series and over 2,300 specifications, our flame-retardant, heat-resistant, and impact-proof components ensure stable connections and accurate metering. We support mixed-model orders, OEM/ODM customization, and flexible packaging to meet your project needs.