Description

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1. grade: w**0, w**0
- moisture: 5% max
- broken: 5% max
- melasma: 3% max
- mould and fungus: 0%
- admixture: 1% max
- silk sell: 3% max
- dent rate: 3% max
2. grade: ws
- moisture: 5% max
- foreign matter : 1%max
- broken: vertical broken
- live insect and larvas: negative
- coliforms, salmonella: negative
3. grade: lp
- moisture: 5% max
- melasma: 3% max
- admixture: 1% max
 live insect and larvas: negative
- coliforms, salmonella: negative.