Quzhou Zunlong Trading Co.,Ltd was confirmed by Ministry of Commerce of the People's Republic of China. Business in worldwide what be able to import&export international trading. There are many biggest manufacturer of china that established best cooperation with our international trading. We supply biggest quantity and best quality of rough synthetic corundum ruby it used for jewelry industry and gemstone bearing industry. We agent sale anhydrite gypsum of top quality who is biggest one of the chinese manufacturer. We are able to supply PVDC resin powder it has chinese intellectual property. Also, we have own factory of screen doors and windows. please visit Quzhou kecehng weibai door&window firm.