Our company has professional qualifications, for many years engaged in import and export goods weight appraisal business。The weight verification certificate issued by us is the valid evidence for the settlement of foreign exchange for the delivery of export commodities, the issuance of bills of lading and the settlement of claims for imported commodities。Weight identification usually includes: weighing weight, water gauge weight, capacity weight and flow weight。 

The so-called "weighing instrument" is the use of accurate weighing instrument, the use of scientific methods, through the correct operation and standard weight calculation, to confirm the accurate weight of the goods。All kinds of goods can use the weighing method to determine the weight, but some of the low value of the shipping bulk goods, generally using the water gauge weight method to determine the weight。 

The so-called "water gauge weight" is to take the carrier ship as a large weighing instrument, observe its draft before loading, after unloading or before and after unloading, check the corresponding displacement according to the effective ship chart, after the necessary correction and calculation, and finally obtain the weight of the goods。This way of weighing is conducive to reducing costs and improving transportation efficiency。 

Capacity weighing and flow weighing are generally suitable for bulk liquid or gas cargoes。Capacity weighing is a method of measuring the weight of the liquid goods by measuring the depth (space) of the liquid goods in the container or reading the accumulated volume flow of the liquid flowing through the table on the flow meter of the certified standard container or flowmeter, and calculating the weight of the liquid goods after the necessary correction in combination with the liquid density and temperature。Volumetric weight is generally applicable to the measurement of animal and plant oils, mineral oils and their products, liquid chemicals and other bulk liquid commodities and liquefied gas products。 

Flow metering is to install the flowmeter on the pipeline flowing through the liquid, and use the liquid pressure difference as the power to drive the flowmeter to rotate to achieve the purpose of measurement。

Cabin weight identification is to calculate the weight of oil products by measuring the cabin space (liquid depth), oil temperature and bottom water, combined with the density of oil products。Measuring the time space distance (liquid depth), oil temperature and bottom water are usually all measured to calculate the oil weight。

Bottom water inspection: the oil usually contains water and clear water, and the clear water often gathers at the bottom of the oil, and the height of the clear water at the bottom of the oil is detected by water testing reagents or special equipment, so as to calculate the quantity。Subtract the weight of the water when calculating the weight of the oil。

Dry tank inspection: Dry tank inspection is to calculate the residual amount of undischarged goods by measuring the liquid depth of residual goods in each tank after unloading。

Product range:

◆ Weighing machine weight: using different weighing machines can be applied to all kinds of general goods。 
◆ Water gauge weight: suitable for bulk solid cargo weight, such as coal, salt, sea sand, mineral sand, pig iron, sulfur, petroleum coke, cement, fertilizer, etc。 
◆ Capacity weight: suitable for bulk liquid, gas cargo weight，Such as crude oil, fuel oil, naphtha, gasoline, diesel oil, kerosene and aviation kerosene, lubricating oil, solvent oil, heavy oil, asphalt, sulfuric acid, hydrochloric acid, phosphoric acid, soda ash, liquid alkali, toluene, methanol, ethylbenzene, ethylene glycol, glycerin, acrylic acid, oxalic acid, phenol, acetic acid, acetone, beef and sheep oil, soybean oil, coconut oil, palm oil, peanut oil, cottonseed oil, castor oil, liquefied natural gas,Liquefied petroleum gas, other liquefied gases, etc。