JSFiddle - React, Tailwind, and code Playground

HTML

<div class="wrapper">
<div class="row-fluid">         <table style="font-size:10px">
<tbody>
<tr>


<td>
      <select id="Volum">
<option value="1x ">1x </option>
<option value="2x ">2x </option>
<option value="3x ">3x </option>
<option value="4x ">4x </option> 
<option value="5x ">5x </option> 
<option value="6x ">6x</option> 
</select></td>
 <td>     
<select id="produse">
<option value="reset">Selecteaza Produs</option>
<option value="Canapele">Canapele</option>
<option value="Mobila">Mobila</option>
<option value="Fotolii">Fotolii</option> 
<option value="Coltare">Coltare</option> 
<option value="Seturi">Seturi</option> 
</select></td>
<td>
<select id="ModeleColtare" class="sub_select_class">
<option value="Coltar Vera">Coltar Vera</option>
<option value="Coltar Onix">Coltar Onix</option>
<option value="Coltar Olyve">Coltar Olyve</option>
<option value="Coltar Adrian">Coltar Adrian</option>
</select></td>
<td>
<select id="ModeleSeturi" class="sub_select_class">
<option value="Set Dana">Set Dana</option>
<option value="Set Ramona">Set Ramona</option>
<option value="Set Gina">Set Gina</option>
<option value="Set Olyve">Set Olyve</option>
</select></td>
<td>
<select id="ModeleFotolii" class="sub_select_class">
<option value="Fotoliu Gina">Fotoliu Gina</option>
<option value="Fotoliu Dana">Fotoliu Dana</option>
<option value="Fotoliu Ramona">Fotoliu Ramona</option>
<option value="Fotoliu Florin">Fotoliu Florin</option>
<option value="Fotoliu Olyve">Fotoliu Olyve</option>
</select></td>
<td>
<select id="ModeleMobila" class="sub_select_class">
<option value="Selecteaza Mobilierul">Selecteaza Mobilierul</option>
<option value="Birou Mic">	Birou Mic</option>
<option value="Birou Mare">    Birou Mare</option>
<option value="Comoda 3 Sertare">	Comoda 3 Sertare</option>
<option value="Comoda 4 Sertare">	Comoda 4 Sertare</option>
<option value="Comoda Katy">	Comoda Katy</option>
<option value="Comoda Alin">	Comoda Alin</option>
<option value="Cuier Sorin">	Cuier...

CSS

#ModeleCanapele, #Manere, #Perne, #ModeleMobila, #Perne2, #Ornamente, #StofaPrincipala, #Piele, #Pal1, #Cheder, #Pal2, #ManereMobila, #ModeleColtare, #ModeleFotolii, #ModeleSeturi, #ParteSoldatCuiere, #ParteInsulaColtare, #ParteMonitorBirouri{
    display: none;
}

.new-rect {
    background: black;
    width: 100%;
    height: 30px;
}

JavaScript

$("#addMore").click(function() {
  var newRow = $(".row-fluid:last").clone();
  
  newRow.appendTo(".wrapper");
  
  newRow.find('.sub_select_class').hide();
  
  newRow.find( "#produse" ).change(function(){
    produseChange(this, newRow);
  });
});

$("#produse").change(function() {
  produseChange(this, $('tr')); 
});


function produseChange(self, row)  {
  var $this = $(self),
  value = $this.val(); // save value
  row.find('.sub_select_class').hide(); // we hide every second select
  switch (value) { // we show only what needs to be visible
    case 'Canapele':
      row.find("#ModeleCanapele").show();
      break;
    case 'Coltare':
      row.find("#ModeleColtare").show();
      break;
    case 'Mobila':
      row.find("#ModeleMobila").show();
      break;
    case 'Fotolii':
      row.find("#ModeleFotolii").show();
      break;
    case 'Seturi':
      row.find("#ModeleSeturi").show();
      break;
      // ...etc
  }
}




    // PARTE SOLDAT CUIERE
    $("#ModeleMobila").change(function(){
    if($(this).val() == 'Cuier Mare' ||
    $(this).val() == "Cuier Sorin"){
      $("#ParteSoldatCuiere").show();
    }else{
      $("#ParteSoldatCuiere").hide();
	  $("#ModeleColtare").hide();
    }
    });
    
        // PARTE INSULA COLTARE
    $("#ModeleColtare").change(function(){
    if($(this).val() == 'Coltar Onix'){
      $("#ParteInsulaColtare").show();
    }else{
      $("#ParteInsulaColtare").hide();
    }
    });
    
    // PARTE MONITOR BIROURI
    $("#ModeleMobila").change(function(){
    if($(this).val() == 'Birou Mare' ||
    $(this).val() == "Birou Mic"){
      $("#ParteMonitorBirouri").show();
    }else{
      $("#ParteMonitorBirouri").hide();
    }
    });
    
    
    



// BRATE CANAPELE
$("#ModeleCanapele").change(function(){
    if($(this).val() == "Canapea Gina" ||
    $(this).val() == "Canapea Dana" ||
    $(this).val() == "Canapea Florin" ||
    $(this).val() == "Canapea Lyon" ||
    $(this).val() == "Canapea Dana")
    {
     ...