2. Alternative Route
From Bangkok get on Asia road32 heading to Nakornsawan and get on a U turn bridge at KM.11 .
After get off the U turn bridge the PTT gas station will be on the left then turn left to Uthai3056 intersection and keep going till see D gate then make a right to get in to Rojana Industrial Park2.
Turn left at soi D1 and keep heading to the main street to get to E gate then turn right and keep heading till see NIDEC company make a left at soiE3.
Keep driving along soi E3 probably 50 m. Silom Medical Factory will be on the right.