A group of test devices arranged for siphonic roof rainwater drainage system was established in 1998. The various performance of roof drains for siphonic drainage systems is primarily determined and the calculated rainwater system is checked by testing. Therefore,our self-developed siphonic system is based on sufficient testing data.

In 2000,The roof outlets we researched obtained the patent certificate,and adopted the accreditation of many large-scale design institutes orgnized by Construction National Project Building Standard Design and Leading Group.

In 2001, we have involved in the preparation of National Standard Drawings 01S302 for Roof Drains.

In 2002, our company was selected as the only recommended enterprise by National civil construction design technical guidance.

In 2003, our company was chosen as a New and high technology enterprise by Beijing Science and Technology Committee.we also reached the ISO9001:2000 standard and gained the Quality Management System Certificate.

In 2004, Tidelion company participated in the production of technical Codes CECS183：2005 for Application of Siphonic Roof Drainage System which was sponsored by China Engineering Standard Society, and took in charge of producing the vocational standard of siphonic Roof Drainage System which was one of the industrial standards of the Ministry of Construction. In the same year, our company became a member of branch of the 1st Water Supply and Drainage Conference, and member of branch of the 2nd Conference for Equipments of Water Supply and Hot Water.

In 2005, the company participated in the production of the national standard GB50400-2006 of technical Standard of Application of Rain in Buildings and Residential Blocks, including the contents for siphoning-type roof drainage system.

In recent years, our company has set up branch offices in Beijing ,Shenzhen,Shanghai ,Hangzhou,Jinan,Tianjin and Changsha to improve the installation and after-sale services. Our company has obtained over 600 projects for design and installation. Especially the 145000 m2 roof area of Shenzhen Internatinal Convention and Exhibition Center signed in 2002,the 343000 m2 roof area of Beijing Capital International Airport Extension Project T3A & GTC signed in 2005 is the greatest siphonic roof drainage system project in China.Particularly,in the latter half of 2005,we made phenomenal progress in business, and have signed several important Olympic projects,such as Wukesong Stadium, National Swimming Center and National Conference Center, etc., which has established the leading status for the Tidelion company in this field. A lot of projects designed or installed by our company are well accepted by our clients such as Beijing Xizhimen Light Railway Station, Beijing Subway Batong Line Depot,Beijing National Firm Musume, Shanghai Coach Station,Guangzhou Baiyun Int"l Airport Cargo Terminal,Hangzhou Auto mobile Exhibition Center , Zhengzhou International Convention and Exhibition Center and Hainan Meinan International Airport Hanger.

The siphonic drainage system applies to large civil and industrial buildings such as exhibition center, sports areas, ariport, hanger, shopping mall and workshop etc. Siphonic system also conveniently collect rainwater for reclaimation.

Our company will develop new roof drains for market based on test. The sole civil test base with corresponding arrangement for siphonic system has been established. The developed suspension pipesystem and various special fitting conform to Chinese national condition. In the meantime, we have prepared enterprise standard to ensure design, installation and construction acceptance in compliance with corresponding technical requirements. The approval of total quality control enabled the development of our company to get onto the rapid track.