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1·By coated pill screening experiments, selected some good sticky soil samples and auxiliary materials to coate on konjak taro.

选择了一批粘性较好的土样以及辅助材料，对魔芋种芋进行丸化包衣。

2·Nozzle; High quality'kerric'faucet, and its valve spool are used the international porcelain valve spool, its surface is coate with epoxy resin power.

水嘴： 采用“科艺牌”全铜质精铸成型实验室专用水龙头，阀芯采用国际通用的瓷阀芯，表面经环氧树脂粉沫喷涂处理。