Xingtai Yiou Sports Co.,Ltd, is a professional Manufacturer of Magnesium Cartonate Light. Our factory Founded in 2008, stay at Hebei province,China, Area covers 20,000m2, we have 150 workers and own R&D laboratory . we have 13 years experiences in the productions of magnesium carbonate Light. Our company superiority in made of sports-grade magnesium carbonate. We have adopted food-grade magnesium carbonate technology and stainless steel production equipment. Whether in raw materials, process requirements and product quality, it is completely higher than the industrial-grade magnesium carbonate. The Gym chalk blocks and liquid chalk are very smooth. And now we have many different types of chalks, such as Gym Chalk blocks, Chunky Chalk, Chalk Powder, transparent liquid chalk, non-alcoholic liquid chalk and alcoholic liquid chalk, which fully meets the needs of different customers.Our company's sports magnesium carbonate: MgO content: 43%; insoluble hydrochloric acid: 0.1%; calcium oxide content: 0.6%; Now we have business cooperation with many famous companies at domestic and abroad, and we also hope to cooperate with you. Welcome to contact with us, we'd glad to provide samples for trial.