Based upon hi-tech products, ZST has co-operated with hi-tech companies and institutions both nationally and internationally. It has self-produced products and some agency rights. ZST has participated in the construction of over 400 cable TV stations in over 90 cities, counties, villages and companies. ZST was in charge of the introduction of the first HFC optical fiber transmission cable line in He'nan province in 1995. ZST has fulfilled over 80% of the cable TV networks related design, technology service and construction activities in counties of He'nan province. ZST's products and service have been highly praised by customers and the companies in the same business scope since it has a standardized quality assurance system, after-sales service system and effective management system.