SVR3L is made from latex harvested from our rubber plantation. It can meet customer's strict requirement about some of technicalities such as: the PO, Color (Lovibond), SVR3L is made from latex harvested from our rubber plantation. It can meet customerâ??s strict requirement about some of technicalities such as: the PO, Color (Lovibond), â?¦ Latex is preserved by ammonia or sodium sulfite. Then coagulated with formic acid, followed by shredding by passing through a rolling mill, washing system and hash. After the crumb rubber is dried, it will be compressed into blocks and packed in polyethylene bags