Shenzhen Coloury Glassware Co., Ltd. is one of the leading manufacturer and exporter in the trade of hand-made glassware in China. Our main products are Tea makers,Coffee makers and other tea wares. We use high quality borosilicate glass material with a 3.3 coefficient of expansion,the main characteristic of which is good chemical stability,low material expansion and high heat resistant.The instantaneous temperature exposure is from -20centigrade—150centigrade