joinus zhongcheng 82ms-a scientific function calculator student exam computer wholesale trigonometric function score

AnnouncementThis calculator comes in both 7-cell battery version and button cell version.
Battery version 7 (without battery)
Button cell version (includes button electronics) 

Product Introduction: This calculator complies with the national basic education curriculum standards and is selected by the Beijing version, East China Normal University version, and People's Education Press version as the scientific electronic calculator for the experimental teaching materials.

 A: Dual-line display. 10+2-digit index display format with a replay function, multiple statements, and an error indicator.
B：Basic Calculation
Fraction Calculations: 1. Fraction Calculations 2. Decimal to Fraction Format Conversion 3. Mixed Numbers to Improper Fraction Format Conversion
D：Percentage Calculation
E：Degree, Minute, and Second Calculations (60-base system, conversion between 60-base and 10-base systems)
F：小数位数（Fix），有效位数（Sci），指数显示格式（Norm）
G: Memory Computing (Answer Memory, Continuous Calculation, Independent Storage, 9 Variables)
H: Scientific Function Calculations: 1 - Trigonometric and Inverse Trigonometric Functions 2 - Hyperbolic and Inverse Hyperbolic Functions 3 - Common and Natural Logarithms, Exponents 4 - Square Roots, Cube Roots, Powers, Exponents, Reciprocal, Factorial, Random Numbers, Pi 5 - Angle/Radian Conversion 6 - Coordinate Conversion (Polar to Cartesian and vice versa) 7 - Engineering Symbol Calculations 8 - Permutations 9 - Combinations
I: Statistical calculations: 1 standard deviation, 2 regression calculations (linear regression, logarithmic regression, exponential regression, inverse regression, quadratic regression)
J: Priority-based operation, stack memory
K：240种计算功能

Weight: 140g

                              If you have any other questions, please feel free to ask!

Because it is measured by hand, it cannot be absolutely accurate, but the error is very small. The weight includes the weight of the box (if there is a box)

Wholesale Return and Exchange Policy:

1. Retail buyers (first tier price) please inspect the goods before signing for them, and if there are any problems, contact customer service immediately and send them back for a refund within 3 days! If the goods are sent incorrectly or have quality problems, the seller will bear the round-trip shipping costs, and for other reasons, the buyer will bear the round-trip shipping costs! (Quality issues are limited to calculators that cannot be used normally, so buyers should first inspect the goods in the physical store before placing an order).

The second and third tier prices are both wholesale bulk prices. Please, wholesale merchants, accumulate the defective machines into a box (or reach a total of 500 yuan) and contact customer service before shipping them back for a return and exchange. Those who do not meet the conditions must return to the warehouse for settlement or pay the shipping costs to send them back for a return and exchange!

3. For merchants with a limited number of defective products (in the second and third price tiers), there is an annual free exchange or return policy for defective products (it is recommended that merchants accumulate defective products and return them at the end of the year).