| SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) | 12 Months Ended |
| Mar. 31, 2017 |
| Accounting Policies [Abstract] | |
| Principles of consolidation | (a) Principles of consolidation |
| Investments under equity method | (b) Investments
under equity method - When the estimated
amount to be realized from the investments falls below its carrying value, an impairment charge is recognized in the consolidated
statements of operations when the decline in value is considered other than temporary. |
| Cash and cash equivalents | (c) Cash and
cash equivalents
Cash equivalents
are placed with financial institutions with high credit ratings and quality. |
| Accounts receivable | (d) Accounts receivable |
| Inventories | (e) Inventories |
| Goodwill | (f) Goodwill |
| Property, plant and equipment | (g) Property, plant and equipment |
| Impairment or disposal of long-lives assets | (h) Impairment
or disposal of long-lives assets
No impairment expenses
are recognized for long-lived assets during the years ended March 31, 2015, 2016 and 2017. |
| Concentration of credit risk | (i) Concentration
of credit risk
The risks with respect
to accounts receivables are mitigated by credit evaluations performed on the customers or debtors and ongoing monitoring of
outstanding balances. The Group establishes an allowance for doubtful accounts based upon estimates, factors surrounding the
credit risk of specific customers and other information. Accounts receivable are charged against the allowance after all means
of collection have been exhausted and the potential for recovery is considered remote. The accounts receivable from customers
with individual balances over 10% of the accounts receivable represent 78%, 70% and 73% of the balances of accounts receivable
as of March 31, 2015, 2016 and 2017, respectively. |
| Revenue recognition | (j) Revenue recognition
Persuasive evidence
of an arrangement exists;
Delivery has occurred;
Price to the customer
is fixed or determinable; and
Collectability is
reasonably assured.
Revenue from sales
of products is recognized when the title is passed to customers upon shipment and when collectability is reasonably assured.
The Group does not provide its customers with the right of return (except for quality) or price protection. There are no customer
acceptance provisions associated with the Group's products. All sales are based on firm customer orders with fixed terms and
conditions, which generally cannot be modified. |
| Staff retirement plan costs | (k) Staff retirement plan costs |
| Foreign currency translations and transactions | (l) Foreign currency
translations and transactions
The books and records
of the Company's major subsidiaries are maintained in their respective local currencies, the Hong Kong dollars or Renminbi,
which are also their respective functional currencies. All assets and liabilities are translated at the rates of exchange
prevailing at the balance sheet date and all income and expense items are translated at the average rates of exchange over
the year. All exchange differences arising from the translation of subsidiaries' financial statements are recorded as a component
of comprehensive income (loss). |
| Income taxes | (m) Income taxes
The Group recognizes
the effect of income tax positions only if those positions are more likely than not of being sustained. Recognized income
tax positions are measured at the largest amount that is greater than 50% likely of being realized. Changes in recognition
or measurement are reflected in the period in which the change in judgment occurs. The Group records interest related to unrecognized
tax benefits and penalties, if any, within income tax benefits (expenses). |
| Use of estimates | (n) Use of estimates |
| Stock-based compensation | (o) Stock-based compensation |
| Operating leases | (p) Operating leases |
| Net income per share | (q) Net income per share |
| Comprehensive (loss) income | (r) Comprehensive
(loss) income
The Group presents
the components of net income, the components of other comprehensive (loss) income and total comprehensive income in two separate
but consecutive statements. |
| Fair value measurement and financial instruments | (s) Fair value
measurement and financial instruments
Level 1 applies
to assets or liabilities for which there are quoted prices in active markets for identical assets or liabilities.
Level 2 applies
to assets or liabilities for which there are inputs other than quoted prices included within Level 1 that are observable for
the asset or liability such as quoted prices for similar assets or liabilities in active markets; quoted prices for identical
asset or liabilities in markets with insufficient volume or infrequent transactions (less active markets); or model-derived
valuations in which significant inputs are observable or can be derived principally from, or corroborated by, observable market
data.
Level 3 applies
to asset or liabilities for which there are unobservable inputs to the valuation methodology that are significant to the measurement
of the fair value of the assets or liabilities.
Determining which
category an asset or liability falls within the hierarchy requires significant judgment.
The Group did not
have any financial instruments that were required to be measured at fair value on a recurring basis as of March 31, 2016 and
2017. As of March 31, 2016 and 2017, the Group did not have any nonfinancial assets and liabilities that are recognized or
disclosed at fair value in the financial statements, at least annually, on a recurring basis, nor did the Group have any assets
or liabilities measured at fair value on a non-recurring basis.
The carrying amounts
of financial instruments, which consist of cash and cash equivalents, accounts receivable, other current assets, accounts
payable and other liabilities approximate their fair values due to the short term nature of these instruments. |
| Non-controlling interest | (t) Non-controlling interest |
| Recent Changes in Accounting Standards | (u) Recent Changes in Accounting Standards - |
| Recent issued accounting standards not yet adopted | (v)
Recent issued accounting standards not yet adopted In
July 2015, the FASB issued an accounting standard update, which changes the measurement principle for inventories that is measured
using other than last-in, first-out or the retail inventory method from the lower of cost or market to the lower of cost and net
realizable value. Net realizable value is defined by FASB as estimated selling prices in the ordinary course of business, less
reasonably predictable costs of completion, disposal and transportation. The guidance is effective for interim and fiscals years
beginning after December 15, 2016, with early adoption permitted. The guidance should be applied prospectively. The adoption of
this guidance is not expected to have a material impact on the Group's consolidated financial statements. In
November 2015, the FASB issued an accounting standard update which simplifies balance sheet classification of deferred taxes.
The guidance requires that all deferred tax assets and liabilities, along with any related valuation allowance, be classified
as noncurrent. The guidance is effective for interim and fiscals years beginning after December 15, 2016, with early adoption
permitted. The guidance can be applied either prospectively to all deferred tax liabilities and assets or retrospectively to all
periods presented. The adoption of this guidance is not expected to have a material impact on the Group's consolidated financial
statements. In
January 2016, the FASB issued an accounting standard update which improves certain aspects of recognition, measurement, presentation,
and disclosure of financial instruments. The guidance changes the measurement of investments in equity securities and the presentation
of certain fair value changes for financial liabilities measured at fair value, and also amends certain disclosure requirements
associated with the fair value of financial instruments. The guidance is effective for interim and fiscals years beginning after
December 15, 2017, with early adoption permitted for certain changes. The guidance should be applied as a cumulative-effect adjustment
as of the date of adoption, except for the guidance related to equity securities without readily determinable fair values should
be applied prospectively. The adoption of this guidance is not expected to have a material impact on the Group's consolidated
financial statements. In
February 2016, the FASB issued an accounting standard update on leases, which amends various aspects of existing accounting guidance
for leases. The guidance requires all lessees to recognize a lease liability and a right-of-use asset, measured at the present
value of the future minimum lease payments, at the lease commencement date. Lessor accounting remains largely unchanged under
the new guidance. The guidance is effective for interim and fiscals years beginning after December 15, 2018, with early adoption
permitted. Management is currently assessing the potential impact of adopting this guidance on the Group's consolidated financial
statements. In
August 2016, the FASB issued an accounting standard update which amends the guidance on the classification of certain cash receipts
and payments in the statement of cash flows. The guidance is effective for interim and fiscal years beginning after December 15,
2017, with early adoption is permitted. The guidance should be applied retrospectively. The adoption of this guidance is not expected
to have a material impact on the Group's consolidated financial statements. In
January 2017, the FASB issued an accounting standard update which eliminates step two from the goodwill impairment test and instead
requires an entity to recognize an impairment charge for the amount by which the carrying value exceeds the reporting unit's fair
value, limited to the total amount of goodwill allocated to that reporting unit. This guidance is effective for interim and fiscals
years beginning after December 15, 2019, with early adoption permitted. The guidance should be applied prospectively. Management
is currently assessing the potential impact of adopting this guidance on the Group's consolidated financial statements. The adoption
of this guidance would only impact the Group's consolidated financial statements in situations where an impairment of a reporting
unit's assets is determined and the measurement of the impairment charge. |
