SHENZEN - Japanese apparel group Fast Retailing, one of the world's largest clothing businesses, has said it will consider reassessing its relationship with Chinese supplier Shenzhen Artigas Clothing & Leatherware Co if an ongoing strike involving 900 workers is not resolved quickly. The Chinese factory workers are striking at a facility that makes clothing for Fast Retail brand Uniqlo in response to a decision to relocate the factory, currently based in Shenzhen. The parent company of the factory has been moving production to lower cost destinations in Southeast Asia, such as Vietnam, shedding staff in the process.