▁is ▁east ▁of ▁Gu ang z hou ▁in ▁an ▁" e conom ic ▁development ▁zone ", ▁approximately ▁ 3 5 ▁miles ▁from ▁the ▁Pear l ▁River ▁factory . ▁This ▁factory ▁produced ▁two ▁models ▁for ▁the ▁Pear l ▁River ▁P iano ▁Group : ▁the ▁UP 1 2 5 M 1 ▁and ▁the ▁R it m üller ▁UP 1 2 6 R . ▁R it m üller ▁brand ▁pian os ▁sport ▁upgrad ed ▁cabinet ry , ▁a ▁different ▁plate , ▁upgrad ed ▁felt ▁and ▁several ▁different ▁scale ▁designs . ▁Both ▁product ▁lines ▁were ▁market ed ▁in ▁the ▁United ▁States ▁by ▁ret ail ▁piano ▁stores ▁and ▁had ▁additional ▁brand ing ▁to ▁the ▁side ▁of ▁the ▁keys ▁reading ▁made ▁by ▁" Y am aha ▁Pear l ▁River ." ▁ ▁Stein way ▁ ▁Pear l ▁River ▁also ▁manufact ures ▁all ▁models ▁for ▁Stein way ▁& ▁S ons ' ▁Es sex ▁brand ▁piano ▁line , ▁including ▁grand ▁pian os ▁and ▁u pr ights , ▁in ▁their ▁factory ▁in ▁Gu ang z hou . ▁On ▁May ▁ 1 , ▁ 2 0 0 5 , ▁Stein way ▁& ▁S ons ▁and ▁Pear l ▁River ▁P iano ▁Group ▁joint ly ▁announced ▁an ▁agreement . ▁The ▁companies ▁began ▁developing ▁several ▁new ▁Es sex ▁models , ▁which ▁Stein way ▁& ▁S ons ▁designed ▁for ▁affili ate ▁company ▁Boston ▁P iano ▁Co ., ▁Inc . ▁The ▁piano ▁line ▁reached ▁the ▁market place ▁early ▁in ▁ 2 0 0 6 . ▁It ▁was ▁Stein way ' s ▁first ▁vent ure ▁in ▁China , ▁and ▁Pear