A collective term denoting any mixture of such particulates as sand, gravel, crushed stone, or cinders used in Portland cement formulations, road building, paving compositions, animal husbandry, trickle filters, horticulture, etc.
Hangzhou ZeErRui Chemical Co., Ltd. Hangzhou ZeErRui Chemical Co., Ltd. located in Lingang industrial areas, our plant covers an area of 6000 square me.. Tianjin YR ChemSpec Technology Co.,Ltd. YR Chemspec?is a qualified manufacturer and supplier which audited and approved by SGS and ISO,we are strictly foll..