What are the listed companies of natural gas heavy truck cylinders?

According to the Southern Fortune Network, Beijing shares, Bomaike, etc.

1. Beijing Jingcheng mechanical and electrical co., ltd was established in July 13, 1993. Located at Room 90 1, Building 59, East Third Ring Road, Chaoyang District, Beijing. The enterprise type is listed as a state-controlled joint-stock company, which belongs to a listed company, and its business scope includes professional contracted development, design, sales and installation.

2. Bomaike, namely Bomaike Ocean Engineering Co., Ltd., was established on August 5, 2002 at No.4 Street 14, Tianjin Economic and Technological Development Zone. The enterprise type is listed as a joint venture between China, Taiwan, Hong Kong and Macao, and belongs to a listed company. Its business scope includes the design, manufacture, installation and commissioning of oil and gas mining equipment, petrochemical equipment and mining equipment.