system: You are a contract-analysis assistant performing a span-extraction task. You are given an excerpt from a commercial contract and the name of a clause type to locate within it.

Return the exact text of the requested clause, copied verbatim from the excerpt — identical wording and punctuation, with no paraphrasing, summarising, explanation, or added commentary.

The excerpt is one window of a much longer contract and often will not contain the requested clause. If the requested clause does not appear in this excerpt, respond with exactly: Not found.

Output only the extracted clause text, or the exact string `Not found.` — nothing else.

user: Contract excerpt:
"""
$300,000 $1,300,000 Year 5 $2,100,000 $300,000 $1,800,000 (1) the technology Access Fee payable quarterly in advance in equal installments at the beginning of each royalty quarter and; 4.7 Payment year 1 of this agreement shall start at the commencement date and the first royalty quarter will be completed at the end of the calendar quarter. Subsequent royalty quarters will correspond with the calendar quarters ending on the last days of March, June, September and December respectively. 4.8 Dynamic Hearing shall provide engineering and other services (hereinafter "Fees For Services") to IntriCon on a timetable to be agreed upon in writing forming part of this agreement as an exhibit. Dynamic Hearing will invoice IntriCon on a quarterly basis 30 days from the end of the quarter for engineering and services that exceed 260 hours in a single month at the rate of $150 per hour. Payments for such services shall be due and payable within 30 days of the end of that royalty quarter. There will be no charge by Dynamic Hearing to IntriCon for the first 260 hours of engineering and services provided each month, however, any unused hours will not be carried forward as credit to subsequent months or be entitled to be offset against any future monthly amounts payable for engineering and services. IntriCon is entitled to utilize such engineering services for the HH, ALD or PADA markets. Other service support (e.g. marketing or audiology) may be contracted at the same rates. If Dynamic Hearing staff are required by IntriCon to travel to meetings, all airfares, ground transportation, hotel bills and other out of pocket expenses will be paid by IntriCon. 4.9 Royalty Payments will be made only on the Base Product Unit, or on the Base Product portion of an Enhanced Product for any Base Product included in an Enhanced Product. The initial base rate of royalty shall include the use of the DSP Framework. In no case shall IntriCon pay Royalty Payments on any product or portion of any product other than for revenue received for Base Product Unit or for the Base Product portion of an Enhanced Product, and in the case a Base Product portion of an Enhanced Product such Base Product portion shall not be given a value that is influenced by its inclusion in the Enhanced Product. Royalty Payment for HH, ALD and PADA units that incorporate Dynamic Hearing Technology shall be paid according to the table set forth below: The maximum royalty rate identified in the table herein includes an initial base rate of 3% for each Ezairo DSP platform and 1% for each Single Chip Hearing Aid (SCHA) sold. A 2% royalty rate per Base Product Unit shall be added to the initial base rate for each DSP feature/module that is based on Dynamic Hearing Technology and that is added to a Base Product Unit. However, such additional Royalty Payments when added to the initial base rate shall not exceed in total the stated maximum rates specified in the table herein. 10 (2) any monthly fees for services and royalties are payable in accordance with clause 4.8 and royalty payments under 4.4 and 4.9. Cumulative annual HH & ALD Volume that use the Framework Ezairo Maximum Royalty Rate SCHA Maximum Royalty Rate Less Than 20,000 Units 10% 8% 20,000-50,000 units 9% 7% 50,000-100,000 units 8% 6% 100,000-200,000 units 7% 5% 200,000-500,000 units 6% 4% 500,000 to 1,000,000 units 5% 3% Over 1,000,000 5% 1.5% 4.10 All amounts payable by IntriCon under this Agreement must be paid free and clear of and without any deduction or withholding for or on account of any present or future withholding tax, including any interest or penalties in relation to such tax (Withholding Taxes). If IntriCon is required to make any deduction or withholding for any Withholding Tax, then IntriCon must pay to Dynamic Hearing such additional amount to ensure that Dynamic Hearing receives such amount that would have been received by it as if no such withholding or deduction had been required. 5.1 Within thirty (30) days of the end of each payment quarter IntriCon must provide to Dynamic Hearing a statement of the actual number and value of Base Product Units Sold along with the number and value of DSP features/models sold with those Base Product Units by it or any Related Body Corporate. The statement must also include calculations of the per unit royalty in accordance with clause 4.9. Any royalty due for payment by IntriCon to Dynamic Hearing is payable at
"""

Extract the exact clause related to "Revenue/Profit Sharing" from the excerpt above.

assistant: Cumulative annual HH & ALD Volume that use the Framework Ezairo Maximum Royalty Rate SCHA Maximum Royalty Rate Less Than 20,000 Units 10% 8% 20,000-50,000 units 9% 7% 50,000-100,000 units 8% 6% 100,000-200,000 units 7% 5% 200,000-500,000 units 6% 4% 500,000 to 1,000,000 units 5% 3% Over 1,000,000 5% 1.5%