NPK 14-10-8 Special for rubber tree Form: granular Color: dark grey NPK 14-10-8special for rubber treewe can supply NPK fertilziers with various specification, such as 10-10-10, 15-15-15, 14-10-8, 16-16-8+TE, etc.Form: granularColor: dark grey Water Soluble NPK fertilizer 14-10-8