diff --git a/src/_constants.js b/src/_constants.js
index d8f01e6..8e641ec 100644
--- a/src/_constants.js
+++ b/src/_constants.js
@@ -1,7 +1,6 @@
 module.exports = {
     app: {
-        BLOCKCHAIN_REFRESH_INTERVAL: 1 * 60 * 60 * 1000, // 1 hr
-        PERIOD_INTERVAL: 15 * 60 * 1000 // 15 min
+        BLOCKCHAIN_REFRESH_INTERVAL: 1 * 60 * 60 * 1000, //1 hr
     },
     request: {
         SIGN_EXPIRE_TIME: 5 * 60 * 1000, //5 mins
@@ -9,6 +8,9 @@ module.exports = {
         INVALID_SERVER_MSG: "INCORRECT_SERVER_ERROR" //Should be reflected in public backend script
     },
     market: {
+        PERIOD_INTERVAL: 5 * 60 * 1000, //5 min,
+        WAIT_TIME: 2 * 60 * 1000, //2 mins,
+        LAUNCH_SELLER_TAG: "launch-seller",
         MAXIMUM_LAUNCH_SELL_CHIPS: 250000,
         TRADE_HASH_PREFIX: "z1",
         TRANSFER_HASH_PREFIX: "z0"
@@ -16,15 +18,15 @@ module.exports = {
     price: {
         MIN_TIME: 1 * 60 * 60 * 1000, // 1 hr
         DOWN_RATE: 0.2 / 100, //0.2% dec
-        UP_RATE: 0.5 / 100, //0.5 % inc
+        UP_RATE: 0.5 / 100, //0.5% inc
         MAX_DOWN_PER_DAY: 4.8 / 100, //max 4.8% dec
         MAX_UP_PER_DAY: 12 / 100, //max 12% inc
         CHECK_RATED_SELLER: false,
         TOP_RANGE: 10 / 100, //top 10%
-        REC_HISTORY_INTERVAL: 1 * 60 * 60 * 1000, // 1 hr
+        REC_HISTORY_INTERVAL: 1 * 60 * 60 * 1000, //1 hr
     },
     backup: {
-        SHARE_THRESHOLD: 50 / 100, // 50%
+        SHARE_THRESHOLD: 50 / 100, //50%
         HASH_N_ROW: 100,
         SINK_KEY_INDICATOR: '$$$',
         BACKUP_INTERVAL: 5 * 60 * 1000, //5 min
diff --git a/src/market.js b/src/market.js
index 6055498..e9fc01d 100644
--- a/src/market.js
+++ b/src/market.js
@@ -695,6 +695,9 @@ module.exports = {
     get rates() {
         return coupling.price.currentRates;
     },
+    get priceCountDown() {
+        return coupling.price.lastTimes;
+    },
     addBuyOrder,
     addSellOrder,
     cancelOrder,
diff --git a/src/price.js b/src/price.js
index 9afc1f3..e416ef5 100644
--- a/src/price.js
+++ b/src/price.js
@@ -207,5 +207,11 @@ module.exports = {
     },
     get currentRates() {
         return Object.assign({}, currentRate);
+    },
+    get lastTimes() {
+        let countDown = {};
+        for (let asset in lastTime)
+            countDown[asset] = lastTime[asset] + MIN_TIME;
+        return countDown;
     }
 }
\ No newline at end of file
diff --git a/src/request.js b/src/request.js
index 1eb0d06..753e0f5 100644
--- a/src/request.js
+++ b/src/request.js
@@ -400,16 +400,23 @@ function GetRates(req, res) {
         res.status(INVALID.e_code).send(INVALID_SERVER_MSG);
     else {
         let asset = req.query.asset,
-            rates = market.rates;
+            rates = market.rates,
+            countDown = market.priceCountDown;
         if (asset) {
             if (asset in rates)
-                res.send(rates[asset].toString());
+                res.send({
+                    asset: asset,
+                    rate: rates[asset],
+                    countDown: countDown[asset]
+                });
             else
                 res.status(INVALID.e_code).send("Invalid asset parameter");
         } else
-            res.send(rates);
+            res.send({
+                rates,
+                countDown
+            });
     }
-
 }
 
 function GetRateHistory(req, res) {