Founded in 1996, Shandong Kaer Electric Co., Ltd. is a provider of intelligent terminal and solution for the Internet of Things and mobile Internet. After 20 years of development, the company has formed a strong research and development strength in wireless communication terminal technology, wireless data terminal technology, smart education application technology, Internet of Things technology, embedded software technology, video technology, etc. The company has relatively complete product production qualifications, including: Telecommunications equipment network access license, national compulsory product certification, quality management system certification, etc. The main products include two categories, including smart communication equipment, IoT smart terminals and solutions. Up to now, the company has more than 100 patents, including 32 invention patents, and nearly 200 computer software copyrights.

J&R Technology Ltd is established in 2012, our headquarters is located in Shenzhen, China. We are the leading provider of dedicated communication and solutions. We are committed to providing faster, safer, and more stable communication equipment and solutions for customers in public safety, transportation, industry, and a wide range of sectors for daily work and critical moments, helping society to be more efficient and safer.

Shenzhen Guanri Telecom-Tech Co., Ltd. is a leading provider of customized end-to-end solutions for various industrial applications to accelerate their productivity, profitability and operations.

GoldTel Communication Group is a private hi-tech enterprise with fast growth, which has been assessed as "State Key Hi-tech Enterprise" and "State Key New Product Project Enterprise". GoldTel is mainly engaged in R&D, manufacture and sales of Hi-tech information products of its own intellectual properties. The Group owns IC design base of state 863 project, Incubators base of 863 project, Western Undergraduate SciTech Incubation Garden. It also set up united lab and academe in USA, Canada, U. K. And Hong Kong. It's business covers: Communication, electric power, finance and tax equipment, satellite communication, design of integrated circuits, intelligent card operation, large scale software development and info network security, intelligent network construction and education industry. GoldTel closely meets the demand of its clients, based on the clients' interests, GoldTel offers rounded solutions and services.

Shenzhen ZHONGKONG Computers Co. Ltd(ZKTEK hereinafter) is located in Shenzhen, China. We are the developer of custom kiosk and digital signage who have the designers and facilities to OEM and ODM your kiosk and digital signage with high quality and good price.

Ningbo Joiwo Explosionproof technology Co., Ltd was established in May, 2011, specialized in public telephones and industrial telephones, we enter industrial telephone field and register Joiwo as our trademark. While maintaining our commitment to the principles of quality and customer service, today's Joiwo aggressively applies leading edge technology to solve the world's most challenging communication needs. Our products are widely used in manufacturing sites of steel, vessel, petroleum and chemistry etc...Waterproof grade of all of our telephones reaches IP67.