approved by the Administrator, every member shalI uIse an account-+
ing and costing system which conforms to the principles of, and
is At least as detailed and complete as, such standard method.
 2. The Code Authority may from time to time determine that
an open price plan of selling such product or products of thle Inrdus-
try' as it shtall specify shall be put into effect on such date as it shall
fix. Notice of such determrination shall be announced to all known
members of the Industry who manlufactur~e such products not less
than 30) days pr~ior to the date so fixed.
 3. At least. ten days prior to such date, every such member shall
file with thle Code Authlorit~y a schedule of prices and terms of sale
for all such products or, in the alternative, ~shall be deemned to have
filed a schedule conforminga in respect to price and terms of sale with
the schedule at any time on file wh]ich states the lowest, price and the
most favorable termls.
 4. All such schedules shllll be in such form as the Code Aut~hority
shall prescribe and shall contain all information :necessary to permit
any interested person to determine the exact net price per unit after
all discounts or other deduc~tions have been made, whether p~erta.ininga
to a single order, a commitment for future delivery~, or a contract.
All sucht original schedules shall become effective on. the date fixed
by thne Code Authority as provided in Section 2 hlereof.
 5. A :revised schedule or sch~edules, or a new schedule or schedules,
or a notice of withdrawal of a, schedule previously filed, mnay) be filed
by a members withl the Code Authority at any time, provided, how-
ever, that any memberr whlo withdraws a schedule without sulbstitut-
ing a new schedule threrefor shall be deemed to have filed a schedule
conformling in respect to price and terms of sale with the schedule
at anyr time thereafter on file wcphich states the lowest price and- the:
mlost fanvorable termls. A~ny schedule or notice filed hereunder shall
become effective five days' after the dat~e of filing, provided, however,
that on increased ~pr ice may become effective at such earlier date as
the member filinga the. same shall ~fix.
 6. The Code Aut~hor~ityr shll prompltly supply all mlemnbers of the
Indlusrry who ma~nufa-cturle any particular product with copies of all
schedules, revised schedules and notices of withdrawal, which per-
t.aiin to such produc~t. Immledliately uplon receipt of information rela;-
tive to the withdlr~awil of a pr1ice for any product, any member ma
file notice of wvith~dlrawal of his onprice for the same pr~oduc~t. ef-
fect~ive as of the same date as the notice of wcithdrawral of such other
member. Immediately on receipt of information that a schedule
then on file has been r~evised~, or that a newr schedule has been filed,
any m~emb~er may file a revisedl schedule conformninlg as to price and
terms to the schedule of such other member, and effective on the same
date, of r hu~~e ma notify the Codfe Authority that he adopts as his own
 the cheuleof uch the meber Inthe latter event, hze shall
 be deemed to have filed a revised schledule conformningr to the revised
 schedule of such other member.
 7. No such schedule of prices and terms of sale filed by any mem-
 ber, or in effect at any time, shall be such as to permit the sale of
 any product at less than the cost thereof to such member dletermlined
 in the manner provided in ~Section 1_1 hereof, provided, how~eer, tha~t
 any member may by notice to the Code A~uthority adopt as his o~wn