performance) bowling balls, doing so for all local tournaments organized by the HKCTBC, effective March 1. It made the announcement in this Facebook post on Saturday:Announcement Regarding the Use of Slow Oil-Absorbing High-Performance Urethane Bowling BallsThe Hong Kong, China Tenpin Bowling Congress (HKCTBC) has been dedicated to developing and promoting tenpin bowling while ensuring fairness,... subscribe to read more. The Hong Kong, China Tenpin Bowling Congress is the latest to ban urethane (slow oil-absorbing high performance) bowling balls, doing so for all local tournaments organized by the HKCTBC, effective March 1. It made the announcement in this Facebook post on Saturday:Announcement Regarding the Use of Slow Oil-Absorbing High-Performance Urethane Bowling BallsThe Hong Kong, China Tenpin Bowling Congress (HKCTBC) has been dedicated to developing and promoting tenpin bowling while ensuring fairness,... Social Media: