Sino-foreign Joint Venture Ningbo Shida Electronic Industry Co., Ltd., is established in 1997, and is a high-tech enterprise that specializes in serial products of Broadcasting and TV, it was ranked as the Hi-Tech manufacturing enterprise by Ningbo City in 1998, and was ranked as the key high-tech enterprise by Zhejiang Province in 1999, when the General Bureau of Radio, Film and Television constituted cable TV location addressable user terminal control national standard in 2000, it adopted some enterprise standards from Ningbo Shida company.

The cable TV end disturbance addition location addressable charge management system produced in Ningbo Shida Company, namely, can achieve the goal of location addressable charge network management and finish the star type network reconstruction of user's two-way distribution, too.

The cable TV front-end disturbance addition charge management system produced in Ningbo Shida Company has front disturbance addition, grade disturbance addition, value- added service and IC card charge management (see the materials for details).

ST series is the high-quality neighbor frequency front-end modulator that can convey over 80 sets PAL programs within 750MHz, its phase noise is about 100dB, and its other indexes keep ahead at home (some indexes have already exceeded the foreign famous brand).

The 1310 and 1550 single & two-way light launching and receiving equipment and the room type single channel and outer type broadband MMDS equipment has the advantages of fine performance, trusty quality and moderate price.

The newly put out RLD series DVB-C digital TV set transmission system to the market, includes: MPEG-2 compress encoder, multiplexer, QAM modulator, digital converter and 2.5 G, 8 G and 11G digital microwave transmission equipment, etc. And has various kinds of related commutators, adapter, two-way amplifier, two- way distributor and multimedia terminal box, etc.