First of all, why the rubber price not hight than now? Because synthetic rubber can use compensate genuine rubber. Synthetic rubber must not higher than genuine rubber. In the past , rubber price is higher than now. So, the interviewee said, genuine rubber cannot higher because now the synthetic rubber price are 39-40 baht. While, genuine rubber price are 63 baht. Therefore, The distance of both price is too many. If genuine rubber price is higher that effect to people will use synthetic rubber more than genuine rubber. As the result, if do not have people use genuine rubber, the gardener will get loss.