Two Optics Valley companies list on the sci-tech innovation board at Shanghai Stock Exchange on Sept 22. [Photo provided to chinadaily.com]

Two more companies resident at East Lake High-tech Development Zone -- in Wuhan, capital of Central China's Hubei province -- were listed simultaneously on sci-tech innovation board at Shanghai Stock Exchange (SSE) on Sept 22, according to local media reports.

The two companies listed on the sci-tech innovation board from the zone -- also known Optics Valley of China -- are Road Environment Technology Co Ltd and Wuhan Keqian Biology Co Ltd.

They were the first and second enterprises in Hubei province listed on the SSE after the novel coronavirus epidemic.

To date, the zone has added four new listed companies this year. At present, the total number of listed companies in the zone has reached 49 and it is expected to exceed 50 this year.

Established in 2006, Road Environment is a high-tech enterprise dedicated to the research, development and industrial applications of technology in the field of environment treatment.

Its business mainly covers the fields of river and lake silt, engineering mud and industrial waste.

After more than 10 years of development, it has become a leading enterprise in its area of expertise, high visibility and influence in the industry.

Last year it reported 304 million yuan ($44.75 million) of operating income and 50.52 million yuan of net profit.

Founded in 2001, Wuhan Keqian Biology is a biomedical enterprise focusing on the research and development, production, sales of veterinary biological products and technical services for animal epidemic prevention.

Its main products are porcine and poultry vaccines.

After nearly 20 years of development, the company has become one of the enterprises with the most product categories in the veterinary biological product industry.

At present, it produces 50 categories of veterinary biological products and last year posted an operating income of 508 million yuan and a net profit of 243 million yuan.