If you apply the certification of this type,it may take about 3 to 4 months to complete the process.Therefore,I recommend you to use SL type.The appearance of this two types is almost the same,the only difference is that cavity is a bit bigger than the previous one.But we are willing to keep the same price.Thus,we only need to apply for adding your trade mark onto the certificate and this will only take no more than 2 months.It will reduce significantly the time spent on the application for the certification.謝謝，我想加一句：我們之前并沒(méi)有這款型號(hào)平臺(tái)的認(rèn)證，Previously, we don't have the certificate of the platform for this type.