From 2021 to April 19, 2022, a total of 8 material enterprises received the acceptance of cast-in-situ class I venues of the China Track and Field Association, with a total of 10 track and field venues (4 mixed type, 4 full PU type, and 2 Sandwich type). Among them, there are 2 sites paved by CNSPORTS (1 for mixed type and 1 for full PU type).

The Cangqian campus stadium of Hangzhou Normal University, paved by CNSPORTS, is the rugby venue of the 19th Asian Games. The total construction area is 32188 square meters with 12000 audience seats. 

CN mixed PU runway laid in the Cangqian campus stadium of Hangzhou Normal University is composed of three layers: ①base primer：polyurethane composite and elastic particles are mixed in proportion, mixed evenly.②strengthened layer：Polyurethane composite with higher purity.③Top layer：Elastic particles with higher strength, higher polymer content and better wear resistance shall be evenly scattered on the strengthened layer.

The Yuecheng sports center covers an area of 220 Mu and can accommodate about 20000 people at the same time.

CN full PU runway laid by Shaoxing Yuecheng sports center is composed of three layers: ①base primer：Glue and slurry are mixed in a certain proportion.② strengthened layer：the polyurethane composite with higher purity. ③Top layer：Polyurethane materials are sprayed by professional equipment under high pressure to form a concave convex surface with clear texture.

CNSPORTS, a professional supplier of polyurethane sports surface system solutions. For more than ten years, it represents the positive energy of China's PU runway industry. The products have been approved by the China Association of farmers and peasants; Double certification of world track and field products and venues; The first batch of Hua'an certification.