... Co.,Ltd, and Jinan Donghan Building Materials Co.,Ltd) is engaged in the production of Grinding Balls, Grinding Bars, Grinding Materials Liners ... and the Crusher Parts in the past 20 years, which are applied in the fields of Cement Plant, Metallurgical ... /C at sight. (2) Delivery Time: 7-10 days after the confirmed order or advance payment for Min 20-50tons.(3 ...