Incwadi yokugcina ivalve yebhabhathane yaseTshayina: iingcebiso zokwandisa ubomi benkonzo
Ivalve yebhabhathane njengesixhobo sokulawula ulwelo esisetyenziswa ngokuqhelekileyo, ukugcinwa kwayo kubalulekile ukuze kwandiswe ubomi benkonzo. Eli nqaku liza kukubonelela ngencwadana yokulondolozwa kwevalve yebhabhathane yaseTshayina ukusuka kwindawo yobuchwephesha yokujonga ukukunceda ukuba uqonde ngcono indlela yokwenza ukugcinwa kweevalvu zebhabhathane zaseTshayina ukwandisa ubomi babo benkonzo.